Triangle. Determine whether a triangle can be built from a given set of edges.

index.js

//http://codility.com/demo/take-sample-test/triangle

function solution(arr) {
    if (arr.length < 3){
      return 0;    
    }
    
    arr.sort(function(a, b){return a - b;});
    
    for (var i = 0, len = arr.length; i < len - 2; i++){
      if (arr[i] + arr[i + 1] > arr[i + 2]){
        return 1;  
      }
    }
    
    return 0;
}