Given an array of integers and an integer return true if any 2 integers of the array add up to a number equal to the integer For example: fn ( [2,1,3,4], 4 ); should return true

double-check.js

function doubleCheck(arr, intgr) {
    var bool = false;
    arr = arr.sort(function(a,b) {return a-b;});
    console.log(arr);
    while(arr.length) {
      var num = arr.shift();
        for(var i=0; i<arr.length; i++) {
            console.log('iteration' + arr[i]);
            if(num + arr[i] === intgr) {
                return true;   
            }
        }
    }
    return bool;
}

if(doubleCheck([2,7,5,6,23,12,11,8,3,4], 5)) console.log('ok');
else console.log('ko');