[Ervin]

function homework() {
	var pupils = ["John Michael Kane", "Kayne A B", "Andrew Garcia K", "Shon M D", "John D K"],
	     countOccurrence = {},
	     element = document.createElement("DIV");
	
	for(var i = 0, leng = pupils.length, pupil = ""; i < leng; i++) {
	   element = document.createElement("DIV");
	   element.innerHTML = pupils[i];
	   pupil = pupils[i].replace(/\s(\w){1,}/g, "");
	   
	   if(countOccurrence[pupil]) {
			countOccurrence[pupil]++;
	   }
	   else {
			countOccurrence[pupil] = 1;
	   }
		
	   document.body.appendChild(element);
	}
	
	for(var name in countOccurrence) {
		element = document.createElement("DIV");
		element.innerHTML = name + " is used " + countOccurrence[name];
		document.body.appendChild(element);
	}
}

window.onload = homework;