chore: added functions for Lesson07.ts and part_d

lesson_07/conditionals/.env.test

@@ -1 +1 @@
-HW_VERSION=your homework version here
+HW_VERSION=D

lesson_07/conditionals/src/lesson7.ts

@@ -7,24 +7,34 @@ import { computeLexicographicDistance } from "./util.js";
  * @param b The second `string` to compare.
  * @return -1 if a is less than b, 1 if a is greater than b, and 0 otherwise.
  */
-export function compareStrings(a: string, b: string): number {
-  // The distance will be a number less than 0 if string `a` is lexicographically less than `b`, 1
-  // if it is greater, and 0 if the strings are equal.
-  const distance = computeLexicographicDistance(a, b);
-
-  // TODO(you): Finish this method.
-
-  return 0;
-}
+function compareStrings(a: string, b: string): number { 
+  if (a < b) {
+    return -1;
+  } else if (a > b) {
+    return 1;
+  } else {
+    return 0;
+  }
+
+} 
 
 /**
  * Computes the factorial of the given value of `n`.
  *
  * @param n The value for which to compute the factorial.
  * @return The factorial of n.
  */
-export function computeFactorial(n: number): number {
-  return 0;
+function computeFactorial(n: number): number {
+  if (n === 0) {
+    return 1;
+  }
+
+  let result = 1;
+  for (let i = 1; i <= n; i++) {
+    result *= i;
+  }
+
+  return result;
 }
 
 /**
@@ -33,8 +43,17 @@ export function computeFactorial(n: number): number {
  * @param n The first `n` of Fibonacci values to compute.
  * @return An array containing the first `n` Fibonacci values.
  */
-export function getFirstNFibonacciNumbers(n: number): number[] {
-  return [];
+function getFirstNFibonacciNumbers(n: number): number[] {
+  let fib: number[] = [];
+
+  for (let i = 0; i < n; i++) {
+    if (i === 0 || i ===1) {
+      fib.push(1);
+    } else {
+      fib.push(fib[i - 1] + fib[i -2]);
+    }
+  }
+   return fib;
 }
 
 /**
@@ -46,24 +65,16 @@ export function getFirstNFibonacciNumbers(n: number): number[] {
  * @param value The value to look for.
  * @return The index of the value if found in the array and -1 otherwise.
  */
-export function binarySearch(
+function findValue(
   values: number[],
   start: number,
   end: number,
-  value: number,
+  value: number
 ): number {
-  if (end < start) {
-    // The range is not valid so just return -1.
-    return -1;
+  for (let i+ start; i <= end; i++) {
+    if (values[i] === value) {
+      return i;
+    }
   }
-
-  const pivotIndex = Math.floor((start + end) / 2); // The index in the middle of the array.
-
-  // TODO(you): Finish implementing this algorithm
-
-  // If values[pivotIndex] is equal to value then return `pivotIndex`.
-  // Else if values[pivotIndex] is greater than the value, then
-  // call `binarySearch(values, start, pivotIndex - 1, value)` and return its value;
-  // Else call `binarySearch(values, pivotIndex + 1, end, value)` and return its value.
   return -1;
 }

lesson_07/conditionals/src/part_d.ts

@@ -6,9 +6,12 @@
  * @param max
  * @returns
  */
-export function isWithinRange(num: number, min: number, max: number): boolean {
-  return false;
-}
+function isWithinRange(num: number, min: number, max: number): boolean {
+  return num >= min && num <= max;
+}  
+
+console.log(isWithinRange(7, 5, 10));
+console.log(isWithinRange(2, 5, 10));
 
 /**
  * Determine if a shape is a triangle based on the given side lengths.
@@ -18,8 +21,8 @@ export function isWithinRange(num: number, min: number, max: number): boolean {
  * @param c
  * @returns
  */
-export function isValidTriangle(a: number, b: number, c: number): boolean {
-  return false;
+function isValidTriangle(a: number, b: number, c: number): boolean {
+  return a + b > c && a + c > b && b + c > a;
 }
 
 /**
@@ -29,6 +32,16 @@ export function isValidTriangle(a: number, b: number, c: number): boolean {
  * @param month
  * @returns
  */
-export function getSeason(month: number): string {
-  return "Invalid month";
-}
+function getSeason(month: number): string {
+  if (month >= 3 && month <= 5) {
+    return "Spring";
+  } else if (month >= 6 && month <= 8) {
+    return "Summer";
+  } else if (month >= 9 && month <= 11) {
+    return "Fall";
+  } else if (month === 12 || month === 1 || month === 2) {
+    return "Winter";
+  } else {
+    return "Invalid month";
+  }
+}