JSFiddle - React, Tailwind, and code Playground

by Brock Callahan

HTML

<div id="output"></div>

JavaScript

writeIt('output', largestOfFour([[13, 27, 18, 26], [4, 5, 1, 3], [32, 35, 37, 39], [1000, 1001, 857, 1]]));


function largestOfFour(arr) {

    var result = [];

    for (var i = 0; i < arr.length; ++i) {
        var max = 0;
        for (var j = 0; j < arr[i].length; ++j) {
            if (max < arr[i][j]) max = arr[i][j];
        }
        result[i] = max;
    }
    return result;
}

function writeIt(id, text) {
    document.getElementById(id).innerHTML = text;
}