JSFiddle - React, Tailwind, and code Playground

by soumya gangamwar

JavaScript

var ar = [ 21, 19, 18, 15, 13, 17 ]

ar.sort((a, b)=> a-b)//13, 15, 17, 18, 19, 21

console.log(`Sorted Array ${ar}`)

ar.forEach((val, index)=> {
  console.log(index, 'val');
    if ((ar[index+1])-(ar[index]) === 1) {
      
    	 console.log(val+1);
       
       //return;
    }
})