find a missing number in an array javascript code example
Example 1: find the missing value in an integer array javascript
let a = [5, 7],
count = 10,
missing = []
for (let i = 1; i <= count; i++) {
if (a.indexOf(i) === -1) {
missing.push(i)
}
}
console.log(missing)
Example 2: The missing value javascript
var a = [5],
count = 5;
var missing = new Array();
for (var i = 1; i <= count; i++) {
if (a.indexOf(i) == -1) {
missing.push(i);
}
}
console.log(missing); // to check the result.