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[main] Added functions
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‎cProblems/meanSquareError/meanSquareError.c‎

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#include <stddef.h>
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double mean_square_error(size_t n, const int a[n], const int b[n])
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{
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double absSum = 0;
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for (int i = 0; i < n; i++)
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{
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int diff = abs(a[i] - b[i]);
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absSum += diff * diff;
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}
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return absSum / n;
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}

‎jsProblems/mergeSortedArrays/mergeSortedArrays.js‎

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/**
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*
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* @param {number[]} arr1
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* @param {number[]} arr2
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* @returns {number[]} The merged sorted array
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*/
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function mergeArrays(arr1, arr2) {
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return [...new Set(arr1.concat(arr2))].sort((e1, e2) => e1 - e2);
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}
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console.log(mergeArrays([1, 3, 5, 7, 9, 11, 12], [1, 2, 3, 4, 5, 10, 12]));

‎jsProblems/nthEvenNumber/nthEvenNumber.js‎

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function nthEven(n) {
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return n * 2 - 2;
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}
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for (let i = 0; i <= 100; i++) {
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console.log(nthEven(i));
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}

‎jsProblems/rentalCarCost/rentalCarCost.js‎

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/**
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*
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* @param {number} d - the # of days the car is rented for
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*/
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function rentalCarCost(d) {
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return d * 40 - ((d >= 3 && d < 7 ? 20 : 0) + (d >= 7 ? 50 : 0));
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}
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console.log(rentalCarCost(3));

‎pythonProblems/alphanumeric/alphanumeric.py‎

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import string
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def alphanumeric(password: str) -> bool:
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print('password = ', password)
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if len(password) == 0:
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return False
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else:
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return ' ' not in password and '_' not in password and '\n' not in password and '\t' not in password and len([x for x in string.punctuation if x in password]) == 0

‎tsProblems/gematria/gematria.ts‎

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export function gematria(str: string): number {
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const letter_dict: { [key: string]: number } = {
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a: 1,
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b: 2,
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c: 3,
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d: 4,
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e: 5,
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f: 6,
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g: 7,
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h: 8,
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i: 9,
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k: 10,
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l: 20,
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m: 30,
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n: 40,
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o: 50,
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p: 60,
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q: 70,
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r: 80,
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s: 90,
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t: 100,
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u: 200,
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x: 300,
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y: 400,
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z: 500,
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j: 600,
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v: 700,
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w: 900,
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};
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return str
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.toLowerCase()
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.split("")
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.map((eachLetter) =>
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letter_dict[eachLetter] ? letter_dict[eachLetter] : 0
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)
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.reduce((e1, e2) => e1 + e2, 0);
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}

‎tsProblems/package.json‎

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{
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"name": "tsproblems",
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"version": "1.0.0",
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"description": "",
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"main": "index.js",
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"scripts": {
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"test": "echo \"Error: no test specified\" && exit 1"
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},
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"keywords": [],
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"author": "",
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"license": "ISC"
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}

‎tsProblems/simpleEncryptionTurnBits/turnBits.js‎

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"use strict";
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exports.__esModule = true;
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exports.decrypt = exports.encrypt = exports.flipBit = void 0;
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function flipBit(bit) {
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return bit === "0" ? "1" : "0";
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}
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exports.flipBit = flipBit;
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function encrypt(text) {
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var _a, _b, _c, _d;
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var allowedChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789 .";
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var doesContainIllegalChars = text
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.split("")
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.some(function (eachChar) { return !allowedChars.includes(eachChar); });
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if (doesContainIllegalChars) {
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throw new Error("Contains illegal chars");
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}
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else {
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var splitStr = text.split("");
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var binValues = [];
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for (var _i = 0, splitStr_1 = splitStr; _i < splitStr_1.length; _i++) {
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var eachStr = splitStr_1[_i];
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var convertedChar = allowedChars
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.indexOf(eachStr)
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.toString(2)
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.padStart(6, "0");
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binValues.push(convertedChar);
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}
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for (var i = 0; i < binValues.length; i++) {
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var firstBin = binValues[i].split("");
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// Step 1
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if (i < binValues.length - 1) {
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var forwardBin = binValues[i + 1].split("");
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_a = [forwardBin[0], firstBin[4]], firstBin[4] = _a[0], forwardBin[0] = _a[1];
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}
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// Step 2
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firstBin[1] = flipBit(firstBin[1]);
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firstBin[3] = flipBit(firstBin[3]);
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// Step 3
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_b = [
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firstBin[3],
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firstBin[4],
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firstBin[5],
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firstBin[0],
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firstBin[1],
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firstBin[2],
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], firstBin[0] = _b[0], firstBin[1] = _b[1], firstBin[2] = _b[2], firstBin[3] = _b[3], firstBin[4] = _b[4], firstBin[5] = _b[5];
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// Step 4
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for (var i_1 = 0; i_1 < firstBin.length - 1; i_1 += 2) {
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_c = [firstBin[i_1 + 1], firstBin[i_1]], firstBin[i_1] = _c[0], firstBin[i_1 + 1] = _c[1];
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}
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// Step 5
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firstBin.reverse();
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// Step 6
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_d = [firstBin[2], firstBin[0]], firstBin[0] = _d[0], firstBin[2] = _d[1];
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binValues[i] = firstBin.join("");
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}
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for (var _e = 0, binValues_1 = binValues; _e < binValues_1.length; _e++) {
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var eachBinValue = binValues_1[_e];
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console.log("bin = ", eachBinValue);
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var indexValue = Number.parseInt(eachBinValue, 2);
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console.log("ind = ", indexValue);
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console.log(allowedChars[indexValue]);
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}
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}
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return "";
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}
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exports.encrypt = encrypt;
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function decrypt(encryptedText) {
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return "";
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}
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exports.decrypt = decrypt;
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encrypt("B9");

‎tsProblems/simpleEncryptionTurnBits/turnBits.ts‎

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export function flipBit(bit: string): string {
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return bit === "0" ? "1" : "0";
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}
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export function encrypt(text: string): string {
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const allowedChars: string =
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"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789 .";
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const doesContainIllegalChars = text
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.split("")
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.some((eachChar) => !allowedChars.includes(eachChar));
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if (doesContainIllegalChars) {
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throw new Error("Contains illegal chars");
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} else {
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const splitStr = text.split("");
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const binValues: string[] = [];
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for (const eachStr of splitStr) {
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const convertedChar = allowedChars
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.indexOf(eachStr)
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.toString(2)
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.padStart(6, "0");
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binValues.push(convertedChar);
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}
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for (let i = 0; i < binValues.length; i++) {
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const firstBin = binValues[i].split("");
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// Step 1
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if (i < binValues.length - 1) {
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const forwardBin = binValues[i + 1].split("");
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[firstBin[4], forwardBin[0]] = [forwardBin[0], firstBin[4]];
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}
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// Step 2
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firstBin[1] = flipBit(firstBin[1]);
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firstBin[3] = flipBit(firstBin[3]);
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// Step 3
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[
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firstBin[0],
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firstBin[1],
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firstBin[2],
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firstBin[3],
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firstBin[4],
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firstBin[5],
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] = [
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firstBin[3],
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firstBin[4],
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firstBin[5],
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firstBin[0],
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firstBin[1],
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firstBin[2],
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];
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// Step 4
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for (let i = 0; i < firstBin.length - 1; i += 2) {
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[firstBin[i], firstBin[i + 1]] = [firstBin[i + 1], firstBin[i]];
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}
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// Step 5
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firstBin.reverse();
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// Step 6
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[firstBin[0], firstBin[2]] = [firstBin[2], firstBin[0]];
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binValues[i] = firstBin.join("");
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}
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for (const eachBinValue of binValues) {
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console.log("bin = ", eachBinValue);
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const indexValue = Number.parseInt(eachBinValue, 2);
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console.log("ind = ", indexValue);
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console.log(allowedChars[indexValue]);
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}
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}
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return "";
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}
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export function decrypt(encryptedText: string): string {
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return "";
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}
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encrypt("B9");

‎tsProblems/tsconfig.json‎

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{
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"compilerOptions": {
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"allowJs": true,
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"lib": ["es2015"],
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/* Visit https://aka.ms/tsconfig to read more about this file */
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/* Projects */
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// "incremental": true, /* Save .tsbuildinfo files to allow for incremental compilation of projects. */
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// "composite": true, /* Enable constraints that allow a TypeScript project to be used with project references. */
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// "tsBuildInfoFile": "./.tsbuildinfo", /* Specify the path to .tsbuildinfo incremental compilation file. */
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// "disableSourceOfProjectReferenceRedirect": true, /* Disable preferring source files instead of declaration files when referencing composite projects. */
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// "disableSolutionSearching": true, /* Opt a project out of multi-project reference checking when editing. */
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// "disableReferencedProjectLoad": true, /* Reduce the number of projects loaded automatically by TypeScript. */
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/* Language and Environment */
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"target": "es2016" /* Set the JavaScript language version for emitted JavaScript and include compatible library declarations. */,
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// "lib": [], /* Specify a set of bundled library declaration files that describe the target runtime environment. */
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// "jsx": "preserve", /* Specify what JSX code is generated. */
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// "experimentalDecorators": true, /* Enable experimental support for TC39 stage 2 draft decorators. */
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// "emitDecoratorMetadata": true, /* Emit design-type metadata for decorated declarations in source files. */
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// "jsxFactory": "", /* Specify the JSX factory function used when targeting React JSX emit, e.g. 'React.createElement' or 'h'. */
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// "jsxFragmentFactory": "", /* Specify the JSX Fragment reference used for fragments when targeting React JSX emit e.g. 'React.Fragment' or 'Fragment'. */
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// "jsxImportSource": "", /* Specify module specifier used to import the JSX factory functions when using 'jsx: react-jsx*'. */
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// "reactNamespace": "", /* Specify the object invoked for 'createElement'. This only applies when targeting 'react' JSX emit. */
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// "noLib": true, /* Disable including any library files, including the default lib.d.ts. */
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// "useDefineForClassFields": true, /* Emit ECMAScript-standard-compliant class fields. */
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// "moduleDetection": "auto", /* Control what method is used to detect module-format JS files. */
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/* Modules */
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"module": "commonjs" /* Specify what module code is generated. */,
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// "rootDir": "./", /* Specify the root folder within your source files. */
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// "moduleResolution": "node", /* Specify how TypeScript looks up a file from a given module specifier. */
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// "baseUrl": "./", /* Specify the base directory to resolve non-relative module names. */
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// "paths": {}, /* Specify a set of entries that re-map imports to additional lookup locations. */
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// "rootDirs": [], /* Allow multiple folders to be treated as one when resolving modules. */
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// "typeRoots": [], /* Specify multiple folders that act like './node_modules/@types'. */
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// "types": [], /* Specify type package names to be included without being referenced in a source file. */
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// "allowUmdGlobalAccess": true, /* Allow accessing UMD globals from modules. */
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// "moduleSuffixes": [], /* List of file name suffixes to search when resolving a module. */
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// "resolveJsonModule": true, /* Enable importing .json files. */
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// "noResolve": true, /* Disallow 'import's, 'require's or '<reference>'s from expanding the number of files TypeScript should add to a project. */
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/* JavaScript Support */
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// "allowJs": true, /* Allow JavaScript files to be a part of your program. Use the 'checkJS' option to get errors from these files. */
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// "checkJs": true, /* Enable error reporting in type-checked JavaScript files. */
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// "maxNodeModuleJsDepth": 1, /* Specify the maximum folder depth used for checking JavaScript files from 'node_modules'. Only applicable with 'allowJs'. */
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/* Emit */
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// "declaration": true, /* Generate .d.ts files from TypeScript and JavaScript files in your project. */
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// "declarationMap": true, /* Create sourcemaps for d.ts files. */
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// "emitDeclarationOnly": true, /* Only output d.ts files and not JavaScript files. */
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// "sourceMap": true, /* Create source map files for emitted JavaScript files. */
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// "outFile": "./", /* Specify a file that bundles all outputs into one JavaScript file. If 'declaration' is true, also designates a file that bundles all .d.ts output. */
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// "outDir": "./", /* Specify an output folder for all emitted files. */
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// "removeComments": true, /* Disable emitting comments. */
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// "noEmit": true, /* Disable emitting files from a compilation. */
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// "importHelpers": true, /* Allow importing helper functions from tslib once per project, instead of including them per-file. */
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// "importsNotUsedAsValues": "remove", /* Specify emit/checking behavior for imports that are only used for types. */
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// "downlevelIteration": true, /* Emit more compliant, but verbose and less performant JavaScript for iteration. */
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// "sourceRoot": "", /* Specify the root path for debuggers to find the reference source code. */
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// "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */
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// "inlineSourceMap": true, /* Include sourcemap files inside the emitted JavaScript. */
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// "inlineSources": true, /* Include source code in the sourcemaps inside the emitted JavaScript. */
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// "emitBOM": true, /* Emit a UTF-8 Byte Order Mark (BOM) in the beginning of output files. */
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// "newLine": "crlf", /* Set the newline character for emitting files. */
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// "stripInternal": true, /* Disable emitting declarations that have '@internal' in their JSDoc comments. */
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// "noEmitHelpers": true, /* Disable generating custom helper functions like '__extends' in compiled output. */
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// "noEmitOnError": true, /* Disable emitting files if any type checking errors are reported. */
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// "preserveConstEnums": true, /* Disable erasing 'const enum' declarations in generated code. */
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// "declarationDir": "./", /* Specify the output directory for generated declaration files. */
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// "preserveValueImports": true, /* Preserve unused imported values in the JavaScript output that would otherwise be removed. */
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/* Interop Constraints */
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// "isolatedModules": true, /* Ensure that each file can be safely transpiled without relying on other imports. */
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// "allowSyntheticDefaultImports": true, /* Allow 'import x from y' when a module doesn't have a default export. */
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"esModuleInterop": true /* Emit additional JavaScript to ease support for importing CommonJS modules. This enables 'allowSyntheticDefaultImports' for type compatibility. */,
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// "preserveSymlinks": true, /* Disable resolving symlinks to their realpath. This correlates to the same flag in node. */
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"forceConsistentCasingInFileNames": true /* Ensure that casing is correct in imports. */,
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/* Type Checking */
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"strict": true /* Enable all strict type-checking options. */,
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// "noImplicitAny": true, /* Enable error reporting for expressions and declarations with an implied 'any' type. */
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// "strictNullChecks": true, /* When type checking, take into account 'null' and 'undefined'. */
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// "strictFunctionTypes": true, /* When assigning functions, check to ensure parameters and the return values are subtype-compatible. */
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// "strictBindCallApply": true, /* Check that the arguments for 'bind', 'call', and 'apply' methods match the original function. */
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// "strictPropertyInitialization": true, /* Check for class properties that are declared but not set in the constructor. */
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// "noImplicitThis": true, /* Enable error reporting when 'this' is given the type 'any'. */
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// "useUnknownInCatchVariables": true, /* Default catch clause variables as 'unknown' instead of 'any'. */
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// "alwaysStrict": true, /* Ensure 'use strict' is always emitted. */
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// "noUnusedLocals": true, /* Enable error reporting when local variables aren't read. */
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// "noUnusedParameters": true, /* Raise an error when a function parameter isn't read. */
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// "exactOptionalPropertyTypes": true, /* Interpret optional property types as written, rather than adding 'undefined'. */
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// "noImplicitReturns": true, /* Enable error reporting for codepaths that do not explicitly return in a function. */
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// "noFallthroughCasesInSwitch": true, /* Enable error reporting for fallthrough cases in switch statements. */
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// "noUncheckedIndexedAccess": true, /* Add 'undefined' to a type when accessed using an index. */
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// "noImplicitOverride": true, /* Ensure overriding members in derived classes are marked with an override modifier. */
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// "noPropertyAccessFromIndexSignature": true, /* Enforces using indexed accessors for keys declared using an indexed type. */
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// "allowUnusedLabels": true, /* Disable error reporting for unused labels. */
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// "allowUnreachableCode": true, /* Disable error reporting for unreachable code. */
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/* Completeness */
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// "skipDefaultLibCheck": true, /* Skip type checking .d.ts files that are included with TypeScript. */
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"skipLibCheck": true /* Skip type checking all .d.ts files. */
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}
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}

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