Codility OddOccurrencesInArray Exercise Solution (JavaScript/NodeJS)

solution_codility_oddoccurrencesinarray.js

// you can write to stdout for debugging purposes, e.g.
// console.log('this is a debug message');

function solution(A) {
    // write your code in JavaScript (Node.js 8.9.4)
    let result = 0
    
    for (let i = 0; i < A.length; i++) {
        result ^= A[i]
    }
    
    return result
}