duplicate hash

duplicate hash

by sramnan

JavaScript

var warr = "sonis sonis sonis is is sonis is sonis";
var arr = warr.split(" ");
var obj = {};

for (var i = 0; i < arr.length; i++) {
  if (!obj[arr[i]]) {
    obj[arr[i]] = 1;
  } else {
    obj[arr[i]] = obj[arr[i]] + 1;
  }
}
var result = [];
for (var key in obj) {
  if (obj[key] > 1) {
    result.push((key)) // change this to result.push(key) to find duplicate strings in an array
  }
}

console.log(result);