function printAllNumbersThenAllPairSums(number) { console.log("These are the numbers"); number.forEach(function(number) { console.log(number); }); console.log("and these are their sums"); number.forEach(function(firstnumber) { number.forEach(function(secondnumber) { console.log(firstnumber + secondnumber); }); }); } printAllNumbersThenAllPairSums([1, 2, 3, 4, 5]); // O(n^2)