( function(){
var singles = [ "a", "b", "c", "d", "e" ];
var combos = [];
// YOUR CODE HERE
for(i=0;i<singles.length;i++) {
for (j=0; j<singles.length; j++)
combos.push(singles[i] + singles[j])
}
console.log(combos)
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 } );
} )();
