function largestOfFour(arr) { return arr.map(function(num) { return Math.max.apply(null, num); }); } largestOfFour([[4, 5, 1, 3], [13, 27, 18, 26], [32, 35, 37, 39], [1000, 1001, 857, 1]]);
Part Australian / Part Canadian
function largestOfFour(arr) { return arr.map(function(num) { return Math.max.apply(null, num); }); } largestOfFour([[4, 5, 1, 3], [13, 27, 18, 26], [32, 35, 37, 39], [1000, 1001, 857, 1]]);