└── assignment5.js


/assignment5.js:
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  1 | // 1 Write a function that takes two parameters, an array of numbers and a target number. The function should return a pair of numbers from the array that adds up to the target number. If no such pair is found, the function should return null.
  2 | const array = [2, 7, 11, 15];
  3 | const target = 13;
  4 | const pair = findPair(array, target);
  5 | 
  6 | 
  7 | function findPair(array, target) {
  8 |   for (let i = 0; i < array.length; i++) {
  9 |     for (let j = i + 1; j < array.length; j++) {
 10 |       if (array[i] + array[j] === target) {
 11 |         return [array[i], array[j]];
 12 |       }
 13 |     }
 14 |   }
 15 | 
 16 |   return null;
 17 | }
 18 | 
 19 | console.log("1 Answer");
 20 | console.log(pair);
 21 | 
 22 | //2 Write a function that takes a string as input and returns the reverse of the string.
 23 | 
 24 | function reverseString(str) {
 25 |   return str.split("").reverse().join(" ");
 26 | }
 27 | 
 28 | console.log("2 Answer");
 29 | console.log(reverseString("bano qabil")); 
 30 | 
 31 | 
 32 | //3 Write a function that takes an array of numbers as input and returns the sum of the two largest numbers in the array.
 33 | 
 34 | const number = [1, 2, 35, 4, 15, 6, 7, 10]
 35 | const sum = sumoftwo(number);
 36 | 
 37 | 
 38 | function sumoftwo(ppl) {
 39 |   ppl.sort(function(a, b) {
 40 |     return b - a;
 41 |   });
 42 |   return ppl[0] + ppl[1];
 43 | 
 44 | }
 45 | 
 46 | console.log("3 Answer");
 47 | console.log(sum)
 48 | 
 49 | //end
 50 | 
 51 | //4 Write a function that takes an array of strings as input and returns a new array that contains only the strings that have more than three characters.
 52 | 
 53 | const strings = ["muzammil", "haseeb", "ali", "at"];
 54 | const filteredStrings = filterStrings(strings);
 55 | 
 56 | function filterStrings(arr) {
 57 |   let filteredArr = [];
 58 |   for (let i = 0; i < arr.length; i++) {
 59 |     if (arr[i].length > 3) {
 60 |       filteredArr.push(arr[i]);
 61 |     }
 62 |   }
 63 |   return filteredArr;
 64 | }
 65 | 
 66 | console.log("4 Answer");
 67 | console.log(filteredStrings); 
 68 | 
 69 | //end
 70 | 
 71 | //5 Write a function that takes an array of numbers as input and returns a new array that contains only the even numbers.
 72 | 
 73 | const numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
 74 | const evenNumbers = EvenNumbers(numbers);
 75 | 
 76 | function EvenNumbers(arr) {
 77 |   let newarr = [];
 78 |   for (let i = 0; i < arr.length; i++) {
 79 |     if (arr[i] % 2 === 0) {
 80 |       newarr.push(arr[i]);
 81 |     }
 82 |   }
 83 |   return newarr;
 84 | }
 85 | console.log("5 Answer");
 86 | console.log(evenNumbers);
 87 | //7 Write a function that takes a string as input and returns true if the string is a palindrome (reads the same backwards as forwards), and false otherwise.
 88 | 
 89 | const str1 = "racecar";
 90 | const str2 = "hello";
 91 | 
 92 | function pal(str) {
 93 |   for (let i = 0; i < str.length / 2; i++) {
 94 |     if (str[i] !== str[str.length - i - 1]) {
 95 |       return false;
 96 |     }
 97 |   }
 98 |   
 99 |   return true;
100 | }
101 | 
102 | console.log("7 Answer");
103 | console.log(pal(str1)); // Output: true
104 | console.log(pal(str2)); // Output: false
105 | 
106 | //9 Write a function that takes an array of strings as input and returns a new array that contains the length of each string in the original array.
107 | var arr1 = ["helloworld", "hey"]
108 | 
109 | function abc(arr) {
110 |   let newarray = []
111 |   for (let i = 0; i < arr.length; i++) {
112 |     const l = arr1[i].length;
113 |     newarray.push(l);
114 |   }
115 |   return newarray;
116 | }
117 | 
118 | console.log("9 Answer");
119 | console.log(abc(arr1))
120 | 
121 | //end 
122 | 
123 | //10 Write a function that takes an array of numbers as input and returns the index of the first number in the array that is greater than or equal to 10.
124 | 
125 | const numberS = [2, 7, 12, 5, 9, 11];
126 | const index = hello(numberS);
127 | 
128 | function hello(arr) {
129 |   for (let i = 0; i < arr.length; i++) {
130 |     if (arr[i] >= 10) {
131 |       return i;
132 |     }
133 |   }
134 |   return -1;
135 | }
136 | 
137 | console.log("10 Answer");
138 | console.log(index);
139 | 
140 | 


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