brandonbarringer · March 22, 2016 20:58
diff --git a/Expand_it.js b/Expand_it.js
 /*
 You are given a string s composed of letters and numbers, which was compressed with some algorithm. 
 Every letter in s is followed by a number (possibly with leading zeros), 
 which represents the number of times this letter occurs consecutively. For example, "aaaaaaaabbbbbbcc" 
 would be given as "a8b6c2".
 */
 Expand_It = (s, k) => s.split(/(\d+|\D+)/g).filter(n => !!n).map( (v, i, a) => v.repeat( a[i+1] ) ).sort().join("")[k-1]
	/*
	You are given a string s composed of letters and numbers, which was compressed with some algorithm.
	Every letter in s is followed by a number (possibly with leading zeros),
	which represents the number of times this letter occurs consecutively. For example, "aaaaaaaabbbbbbcc"
	would be given as "a8b6c2".
	*/
	Expand_It = (s, k) => s.split(/(\d+\|\D+)/g).filter(n => !!n).map( (v, i, a) => v.repeat( a[i+1] ) ).sort().join("")[k-1]