function getSum(len, arr, sum) { if (len < 2) { return 'notfound' } for (var i = 0; i < len; i++) { for (var j = i + 1; j < len; j++) { if (arr[i] + arr[j] == sum) { return arr[i] + ' ' + arr[j] } } } return 'notfound' }
function solve (arr, target) { let i = 0 let j = arr.length - 1 let first, last while (i < j) { first = arr[i] last = arr[j] const sum = first + last if (sum === target) return [first, last] else if (sum > target) j-- else i++ } return null }