JSFiddle - React, Tailwind, and code Playground

by ozzon91

JavaScript

var arr = (function() {
    var a = [];
    for(var i = 10; i<10000; i+=10) {
        a.push([i]);
    }
    return a;
})();

f(arr);
  
function f(arr) {  
    arr = arr.reverse();
    var item = arr[0];
    arr.shift();
    arr.forEach(function(el,n) {
        item = [el[0], item];        
    });    
    console.log(JSON.stringify([item]));
}