task 1

src/filtering.ts

@@ -11,8 +11,8 @@ const numbers = [10, 13, 20, 25, 38, 35, 40];
 // greaterThanTwentyFive(numbers); // => [38, 35, 40]
 function greaterThanTwentyFive(numbers: number[]): number[] {
   // write your code here...
-
-  return []; // replace empty array with what you see is fit
+  const newNumbers = numbers.filter((number) => number >= 25);
+  return newNumbers; // replace empty array with what you see is fit
 }
 
 // `divisibleByFive` function that:
@@ -22,8 +22,9 @@ function greaterThanTwentyFive(numbers: number[]): number[] {
 // divisibleByFive(numbers); // => [10, 20, 25, 35, 40]
 function divisibleByFive(numbers: number[]): number[] {
   // write your code here...
-
-  return []; // replace empty array with what you see is fit
+  const newNumbers = numbers.filter((number) => number % 5 === 0);
+  return newNumbers; // replace empty array with what you see is fit
 }
-
+console.log(greaterThanTwentyFive(numbers));
+console.log(divisibleByFive(numbers));
 export { greaterThanTwentyFive, divisibleByFive };

src/mapping.ts

@@ -11,8 +11,8 @@ const numbers = [10, 13, 20, 25, 38, 35, 40];
 // squaredNumbers(numbers); // => [100, 169, 400, 625, 1444, 1225, 1600]
 function squaredNumbers(numbers: number[]): number[] {
   // write your code here...
-
-  return []; // replace empty array with what you see is fit
+  const newSquare = numbers.map((number) => number * number);
+  return newSquare; // replace empty array with what you see is fit
 }
 
 // `doubledNumbers` function that:
@@ -22,8 +22,10 @@ function squaredNumbers(numbers: number[]): number[] {
 // doubledNumbers(numbers); // => [20, 26, 40, 50, 76, 70, 80]
 function doubledNumbers(numbers: number[]): number[] {
   // write your code here...
-
-  return []; // replace empty array with what you see is fit
+  const newDoubled = numbers.map((number) => number * 2);
+  return newDoubled; // replace empty array with what you see is fit
 }
+console.log(squaredNumbers);
+console.log(doubledNumbers);
 
 export { squaredNumbers, doubledNumbers };

src/mapping_filtering.ts

@@ -11,8 +11,11 @@ const numbers = [10, 13, 20, 25, 38, 35, 40];
 // filteredAndSquared(numbers); // => [400, 625, 1444, 1225, 1600]
 function filteredAndSquared(numbers: number[]): number[] {
   // write your code here...
+  const newFilteredAndSquared = numbers
+    .filter((number) => number >= 20)
+    .map((number) => number * number);
 
-  return []; // replace empty array with what you see is fit
+  return newFilteredAndSquared; // replace empty array with what you see is fit
 }
 
 // `filteredAndTripled` function that:
@@ -22,8 +25,13 @@ function filteredAndSquared(numbers: number[]): number[] {
 // filteredAndTripled(numbers); // => [30, 60, 75, 105, 120]
 function filteredAndTripled(numbers: number[]): number[] {
   // write your code here...
+  const newFilteredAndTripled = numbers
+    .filter((number) => number % 5 == 0)
+    .map((number) => number * 3);
 
-  return []; // replace empty array with what you see is fit
+  return newFilteredAndTripled; // replace empty array with what you see is fit
 }
 
+console.log(filteredAndSquared);
+console.log(filteredAndTripled);
 export { filteredAndSquared, filteredAndTripled };