JSFiddle - React, Tailwind, and code Playground

by pawan1_saket

JavaScript

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let b =[];
    for(var i=0;i < A.length;i++) {
        if(b.indexOf(A[i]) > -1){
            let c = b.indexOf(A[i]);
            b.splice(c,1);
        } else {
            b.push(A[i])
        }
    }
    return b[0]
}

console.log(solution([8,3,9,3,9,3]))