( function(){
var singles = [ "a", "b", "c", "d", "e" ];
var combos = [];
for (var i = 0; i < singles.length; i++) {
for (var s = 0; s < singles.length; s++) {
var double = singles[i] + singles[s];
combos.push(double);
newCombos = combos.join(', ')
}
}
console.log(newCombos)
console.assert( combos.length == 25, { "message" : "`combos.length` does not equal 25", "combos.length" : combos.length } );
console.assert( utility.areArraysEqual( combos, utility.combos ), { "message" : "`combos` does not contain all combinations of letters", "combos" : combos } );
} )();
