Google tasks 1 - 10 created by ybeliaev - https://repl.it/@ybeliaev/Google-tasks-1-10

main.js

// 1. GOOGLE. Given a list of numbers and a number k, return whether any two numbers from the list add up to k.

// For example, given [10, 15, 3, 7] and k of 17, return true since 10 + 7 is 17.

function checkArrForNumber(arr, k){
  var res;
  for(var i = 0; i < arr.length; i++){
    for(var j = 1; j < arr.length; j++){
      res = arr[i] + arr[j];
      if(res == k){
        return true;
      }
    }
  }
  return false;// объясни почему тут место return а не в else после if
}
var arr1 = [10, 15, 3, 7];
//checkArrForNumber(arr1, 13)

//11111111111111111111111111111111111111111111111111111111111111111111111111111

// 2. UBER. Given an array of integers, return a new array such that each element at index i of the new array is the product of all the numbers in the original array except the one at i.

// For example, if our input was [1, 2, 3, 4, 5], the expected output would be [120, 60, 40, 30, 24]. If our input was [3, 2, 1], the expected output would be [2, 3, 6]. т.е. получаем произведение всех чисел и делим на arr[i] исходного массива

function getMultArray(arr){
  let res = 1;
  let newArr = [];
  for(let i = 0; i < arr.length; i++){
      res *= arr[i];
  }
  for(let i = 0; i < arr.length; i++){
      newArr.push(res/arr[i]);
  }
  return newArr;
}
var arr2 = [1, 2, 3, 4, 5];
getMultArray(arr2)
//22222222222222222222222222222222222222222222222222222222222222222