Given an array of integers nums and an integer target, return indices of the two numbers such that they add up to target.

Two-Sum-javascript.js

/**
 * @param {number[]} nums
 * @param {number} target
 * @return {number[]}
 */
var twoSum = function(nums, target) {
    
    for(var i = 0; i < nums.length; i++){
        var n = nums[i]
               
        let otherNumber = target - n
        
                
        let found = false;
        for(var j = 0; j < nums.length; j++) {
            if(j != i && otherNumber == nums[j]){
                return [i,j];
            }
        }
        
        return [0,0]; // not found
        
    }
    
    
};

Two-Sum.php

<?php 
class Solution {

    /**
     * @param Integer[] $nums
     * @param Integer $target
     * @return Integer[]
     */
    function twoSum($nums, $target) {
        
        foreach($nums as $pos => $n) {
            
            $otherNumber = $target - $n;

            foreach($nums as $pos2 => $n2) {
                if($pos != $pos2 && $otherNumber == $n2){
                    return [$pos,$pos2];
                }
            }
        }
 
        return [0,0]; // not found
 
    }
}