filtering 1

src/challenge.ts

@@ -9,6 +9,7 @@
 // logger<number | string>([1, 2, 3, "one", "two", "three"]);
 function logger<T>(array: T[]): void {
   // write your code here...
+  logger
 }
 
 // `toCelsius` function that:

src/filtering.ts

@@ -3,16 +3,18 @@
  * manually test your functions
  */
 const numbers = [10, 13, 20, 25, 38, 35, 40];
+console.log(numbers);
 
 // `greaterThanTwentyFive` function that:
 // - Accepts "numbers" parameter of type "number[]".
 // - Return a new array containing numbers that are greater than or equal to 25.
 // example:
 // greaterThanTwentyFive(numbers); // => [38, 35, 40]
 function greaterThanTwentyFive(numbers: number[]): number[] {
-  // write your code here...
-
-  return []; // replace empty array with what you see is fit
+  // Use filter to get numbers greater than or equal to 25
+  const newarray: number[] = numbers.filter((num) => num >= 25);
+  // f // replace empty array with what you see is fit
+  return newarray; // replace empty array with what you see is fit
 }
 
 // `divisibleByFive` function that:
@@ -21,9 +23,10 @@ function greaterThanTwentyFive(numbers: number[]): number[] {
 // example:
 // divisibleByFive(numbers); // => [10, 20, 25, 35, 40]
 function divisibleByFive(numbers: number[]): number[] {
+  const arraytwo: number[] = numbers.filter((num) => num % 5 === 0);
   // write your code here...
 
-  return []; // replace empty array with what you see is fit
+  return arraytwo; // replace empty array with what you see is fit
 }
 
 export { greaterThanTwentyFive, divisibleByFive };

src/mapping.ts

@@ -10,9 +10,10 @@ const numbers = [10, 13, 20, 25, 38, 35, 40];
 // example:
 // squaredNumbers(numbers); // => [100, 169, 400, 625, 1444, 1225, 1600]
 function squaredNumbers(numbers: number[]): number[] {
+  const squaredarray : number[] = numbers.map((numbers )=> numbers * numbers);
   // write your code here...
 
-  return []; // replace empty array with what you see is fit
+  return squaredarray; // return the array of squared numbers
 }
 
 // `doubledNumbers` function that:
@@ -21,9 +22,10 @@ function squaredNumbers(numbers: number[]): number[] {
 // example:
 // doubledNumbers(numbers); // => [20, 26, 40, 50, 76, 70, 80]
 function doubledNumbers(numbers: number[]): number[] {
+  const doublearray : number []=numbers.map((numbers) => numbers *2);
   // write your code here...
 
-  return []; // replace empty array with what you see is fit
+  return doublearray; // replace empty array with what you see is fit
 }
 
 export { squaredNumbers, doubledNumbers };

src/mapping_filtering.ts

@@ -10,9 +10,10 @@ const numbers = [10, 13, 20, 25, 38, 35, 40];
 // example:
 // filteredAndSquared(numbers); // => [400, 625, 1444, 1225, 1600]
 function filteredAndSquared(numbers: number[]): number[] {
+  const arraythree:number []=numbers.filter((numbers)=> numbers >=20).map((numbers)=>numbers * numbers );
   // write your code here...
 
-  return []; // replace empty array with what you see is fit
+  return arraythree; // replace empty array with what you see is fit
 }
 
 // `filteredAndTripled` function that:
@@ -21,9 +22,10 @@ function filteredAndSquared(numbers: number[]): number[] {
 // example:
 // filteredAndTripled(numbers); // => [30, 60, 75, 105, 120]
 function filteredAndTripled(numbers: number[]): number[] {
+  const arrayfour : number[]= numbers.filter((num)=> num %5 ===0).map((num)=>num *3);
   // write your code here...
 
-  return []; // replace empty array with what you see is fit
+  return arrayfour ; // replace empty array with what you see is fit
 }
 
 export { filteredAndSquared, filteredAndTripled };