higher-order_functions

function reduceRight(arr, starting, func){											
												   
		for(var i = arr.length; i >= 0; i -=1){
			function reduce(arr[i]){					//reduce takes each element in array and reassigns the value to the reverse index
				arr[i-arr.length]=func(i);
			}
			reduce(arr[i]);
		}

		if(starting === number){						//defines rules to print transformed array
			return number += arr.forEach(
				function(ele){
					return number += ele;
				});
		}else if(Array.isArray(starting) && starting.length = 0){
			return arr.slice();
		}else{
			return '{'+ arr + '}';
		}
}

function reduceRight(arr, starting, func){
	if(arr.length === 0){
		return starting;
	}else{
		if(starting === number){
			starting += func(arr[-1]) += reduceRight(arr.slice(0,-2),starting, func);
		}else if(Array.isArray(starting) && starting.length = 0){
			starting.unshift(func(arr[-1])) += reduceRight(arr.slice(0,-2),starting,func);
		}else{
			starting + func(arr[-1]) += reduceRight(arr.slice(0,-2),starting,func);
		}	
	}
	return starting;
}