loops

function repeat(string, number){
	var newStr = '';
	while (number > 0){
		newStr += string;
		number -= 1;
	}
	return newStr;
}

function sum(array){
	var sum = 0;
	for(var i = 0; i < array.length; i += 1){
		sum += array[i];
	}
	return sum;
}

function join(array, delimiter){
	var str = '';

	if(delimiter === undefined || delimiter === null){
		delimiter = '';
	}

	for(var i = 0; i< array.length; i += 1){
		str += array[i] + delimiter;
	}
	return str;
}


function gridGenerator(number){
	var str = '';

	if (number === 0){
		return str;
	}
	for(var i = 1; i < number*number; i += 1){
		if( i % 2 === 0){
			str += ' ';
		}
		str += '#';	
	}
	for (var j= 1; j< str.length; j += number){
		console.log(str.slice(0,number) + '\n');
	}
}

function paramifyObjectKeys(object){
	var str = '';
	var sorted = [];


	for (var k in object){
		if(object.hasOwnProperty(k)){
			sorted.push([k,object[k]]); //makes an array
		}
	}

	function compare(n, n1){ //comparison function
		return n>n1;
	}

	function arrange (sorted, compare){ //rearrange array to sort unsorted
		var swap = true;

		while(swap){
			swap = false;
			var position = 0;
			while(sorted.length-1 > position){
				if(compare(sorted[position][1], sorted[position +1][1])){
					var high = sorted[position];
					sorted[position] = sorted[position +1];
					sorted[position + 1] = high;
					swap = true;
				}
				position +=1;
			}
		}
		return sorted;
	}

	for(var i = 0; i < sorted.length; i += 1){
		if(Array.isArray(sorted[i])){
			str += sorted[i][0] + '=' + sorted[i][1] + '&';
		}
	}
	return str.slice(0,str.length-1);
}

function paramify(object){
	var str = '';

	for(var k in object){
		if(object.hasOwnProperty(k)){
			if(object.length === 1){
				str += k + '=' + object[k];
			}else {
				str += k + '=' + object[k] +'&';
			}
		}
	}
	return str;

}

function renameFiles(array){
	var newArray =[];

	for(var i = 0; i < array.length; i += 1){
		if(newArray[array[i]]){
			var n = 1
			newArray.push(array[i]+'('+n+')');
			n += 1;
		}else{
			newArray.push(array[i]);
		}
	}

	return newArray;

}