JSFiddle - React, Tailwind, and code Playground
by e_kurbanov
JavaScript
function solution(A) {
A.sort(function(a,b){return a - b});
for(var i = 0; i < A.length; i++){
if(A[i + 1] - A[i] !== 1){
console.log( A[i] + 1 ) ;
}
else{
console.log( A[i] )
}
}
}
solution([2, 3, 1, 5]);