feat: adds Kimberlee's lesson_07 conditionals and

loops exercise

Author: haldanek

lesson_07/conditionals/package-lock.json

@@ -28,7 +28,7 @@
     "prettier": "3.3.3",
     "ts-jest": "^29.2.5",
     "ts-node": "^10.9.2",
-    "typescript": "^5.6.2",
+    "typescript": "^5.6.3",
     "typescript-eslint": "^8.7.0"
   }
-}
+}

lesson_07/conditionals/package.json

@@ -1,33 +1,66 @@
 import { computeLexicographicDistance } from "./util.js";
 
-/**
+/** (Q1)
  * Returns true if the provided age meets the minimum US voting age and false otherwise.
  *
  * @param age The age to check.
  * @return True if the age corresponds to a voting age and false otherwise.
  */
 export function canVote(age: number): boolean {
-  return false;
+  return age >= 18;
 }
 
-/**
+const age = 12;
+let checkAge;
+
+if (canVote(age)) {
+  checkAge = true;
+} else {
+  checkAge = false;
+}
+
+console.log(checkAge);
+
+/** (Q2)
  * Compares two strings lexicographically.
  *
  * @param a The first `string` to compare.
  * @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);
+  return distance;
+}
 
-  // TODO(you): Finish this method.
-
-  return 0;
+export function computeLexicographicDistance(a: string, b: string): number {
+  //I literally used export function again because typescript kept telling me
+  // that my return statements needed to be inside the body of a function.
+  // I'm a bit skeptical because we are supposed to be DRY! and the only thing I
+  // changed was the function name. But it worked. I'm just leaving this note
+  // to remind myself to ask for clarification about this.
+  if (a < b) {
+    return -1;
+  } else if (a > b) {
+    return 1;
+  } else {
+    return 0;
+  }
 }
 
-/**
+const result = compareStrings("Kimberlee", "haldane");
+console.log(result);
+
+//If I am understanding question 2 correctly, because the first function
+// 'compareStrings' calls on a second function 'computeLexicographicDistance',
+// I needed to set up both functions. The first function calls the second
+// and the second function does the actual calculation and determines if each string
+// is one of this set (-1, 1, 0). Testing is when the first function comes
+//back into play, comparing two strings and returning a numerical result. Sorry
+// for the long note, it took me a VERY long time to get to this understanding.
+// I just hope I am right.
+
+/** (Q3)
  * Converts a GPA on the 4.0 scale to the corresponding letter grade using the college board
  * scale. See
  * https://bigfuture.collegeboard.org/plan-for-college/college-basics/how-to-convert-gpa-4.0-scale
@@ -36,31 +69,86 @@ export function compareStrings(a: string, b: string): number {
  * @param gpa The GPA value.
  * @return The letter grade ("A+", "A", "A-", "B+", etc.).
  */
+export function myGrade(grade: number): string {
+  const gpa = convertGpaToLetterGrade(grade);
+  return gpa;
+}
+
+//I followed the same logic as question 2. I can already tell that
+// there may be many simpler ways to build this function. I am just
+// happy it came out with no errors and will make a note to play around
+// with this and see if I can't get it to look better (simpler/cleaner).
+
 export function convertGpaToLetterGrade(gpa: number): string {
-  return "F";
+  if (gpa < 65) {
+    return "F";
+  } else if (gpa < 67 && gpa >= 65) {
+    return "D";
+  } else if (gpa < 70 && gpa >= 67) {
+    return "D+";
+  } else if (gpa < 73 && gpa >= 70) {
+    return "C-";
+  } else if (gpa < 77 && gpa >= 73) {
+    return "C";
+  } else if (gpa < 80 && gpa >= 77) {
+    return "C+";
+  } else if (gpa < 83 && gpa >= 80) {
+    return "B-";
+  } else if (gpa < 87 && gpa >= 83) {
+    return "B";
+  } else if (gpa < 90 && gpa >= 87) {
+    return "B+";
+  } else if (gpa < 93 && gpa >= 90) {
+    return "A-";
+  } else if (gpa < 97 && gpa >= 93) {
+    return "A";
+  } else if (gpa <= 100 && gpa >= 97) {
+    return "A+";
+  } else {
+    return "unable to assess";
+  }
 }
 
-/**
+const grade = convertGpaToLetterGrade(32);
+console.log(grade);
+
+/** (Q4)
  * 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;
+  let result = 1;
+  for (let i = 1; i <= n; i++) { // I used i+1 and fell into an infinite loop. My bad!
+    result *= i;
+  }
+  return result;
 }
+// Steps I followed: Describe the function, Declare the function, crawl inside the function
+const n = 7;
+console.log(computeFactorial(n));
+
 
-/**
+/** (Q5)
  * Adds all of the provided values and returns the sum.
  *
  * @param values The values to sum.
  * @return The sum of all the values.
  */
 export function addNumbers(values: number[]): number {
-  return 0;
+  let total = 0;
+  for (const value of values) {
+    total += value;
+  }
+  return total;
 }
 
-/**
+const numbers = [8, 4, 6, 2, 7];
+const sum = addNumbers(numbers);
+console.log(sum);
+
+/** (Q6)
  * Returns an array of the first `n` Fibonacci numbers starting from 1.
  *
  * @param n The first `n` of Fibonacci values to compute.
@@ -70,7 +158,7 @@ export function getFirstNFibonacciNumbers(n: number): number[] {
   return [];
 }
 
-/**
+/** (Q7)
  * Finds a value in an array of values.
  *
  * @param values The values to search.

lesson_07/conditionals/src/lesson7.ts

@@ -0,0 +1,62 @@
+import { computeLexicographicDistance } from "./util.js";
+
+/**
+ * Returns true if the provided age meets the minimum US voting age and false otherwise.
+ *
+ * @param age The age to check.
+ * @return True if the age corresponds to a voting age and false otherwise.
+ */
+export function canVote(age: number): boolean {
+  return age >= 18;
+}
+
+const age = 8; 
+let voTing;
+
+if (canVote(age)) {
+  voTing = true;
+} else {
+  voTing = false;
+}
+
+console.log(voTing);
+
+/**
+ * Compares two strings lexicographically.
+ *
+ * @param a The first `string` to compare.
+ * @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);
+  const distance: number
+ return distance;
+}
+  if (distance < 0) {
+        console.log(-1);
+  } else if (distance > 0) {
+        console.log(1); 
+  } else { 
+        console.log(0); 
+    }
+
+    const result= compareStrings("Kimberlee", "haldane");
+    console.log(result);
+  
+
+  // TODO(you): Finish this method.
+
+ **
+ * Converts a GPA on the 4.0 scale to the corresponding letter grade using the college board
+ * scale. See
+ * https://bigfuture.collegeboard.org/plan-for-college/college-basics/how-to-convert-gpa-4.0-scale
+ * for details.
+ *
+ * @param gpa The GPA value.
+ * @return The letter grade ("A+", "A", "A-", "B+", etc.).
+ */
+export function convertGpaToLetterGrade(gpa: number): string {
+  return "F";