unglinh279 questions

• Make balance bracket with highest score
• What is the minimum number of swaps needed so that the difference of sums of arrays a and b is minimum?
• Minimum Lexicographical String after K removals of first, second, last or penultimate characters
• Longest substring that appears at least twice in O(n.logn)
• Count number of pairs of nodes in undirected graph such that W - L >= K

unglinh279 answers