deleted:    2sum/main.cc
	deleted:    3sum/main.cc
	deleted:    3sum_closest/main.cc
	deleted:    4sum/main.cc
	deleted:    anagrams/main.cc
	deleted:    countAndSay/main.cc
	deleted:    divide/main.cc
	deleted:    generateParenthesis/main.cc
	deleted:    longestPaliSubstr/main.cc
	deleted:    longestSubstrWithRepeatChar/main.cc
	deleted:    longestValidParenthesis/main.cc
	deleted:    medianOf2SortedArray/main.cc
	deleted:    mergeKSortedList/main.cc
	deleted:    regularExpMatch/main.cc
	deleted:    removeDupFromSortedArr/main.cc
	deleted:    removeElement/main.cc
	deleted:    removeNthFromEnd/main.cc
	deleted:    reverseKGroup/main.cc
	deleted:    searchForRange/main.cc
	deleted:    searchInRSA/main.cc
	deleted:    searchInsertPos/main.cc
	deleted:    substringWithConcat/main.cc
	deleted:    swapNodesInPairs/main.cc
	deleted:    validParentheses/main.cc
	leetcode/
refactor