JAVASCRIPT

dual array javascript

var items = [
  [1, 2],
  [3, 4],
  [5, 6]
];
console.log(items[0][0]); // 1
console.log(items[0][1]); // 2
console.log(items[1][0]); // 3
console.log(items[1][1]); // 4
console.log(items);
 Run code snippet

dual array in javascript

var sum = 0;
for(var i=0; i< arr1.length; i++) {
    sum += arr1[i]*arr2[i];
}

dual array in javascript

Map<String, String> map = new HashMap<String, String>();
map.put("key", "value");
String value = map.get("key");