sum of all numbers in an array javascript
const arrSum = arr => arr.reduce((a,b) => a + b, 0)sum of all numbers in an array javascript
const arrSum = arr => arr.reduce((a,b) => a + b, 0)JS two numbers in array whose sum equals a given number
let twoSum = (array, sum) => {
let hashMap = {},
results = []
for (let i = 0; i < array.length; i++){
if (hashMap[array[i]]){
results.push([hashMap[array[i]], array[i]])
}else{
hashMap[sum - array[i]] = array[i];
}
}
return results;
}
console.log(twoSum([10,20,10,40,50,60,70,30],50));Copyright © 2021 Codeinu
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