graphs matrix backtracking bit-manipulation matrices dynamic-programming topological-sort greedy-algorithms binary-search sliding-windows binary-search-trees two-pointers djikstra-algorithm searching-sorting-algorithms arrays-linkedlist-strings-hashmap-trees-tries

linked-list graph-algorithms string matrix array bit-manipulation string-manipulation dynamic-programming java-programming greedy-algorithms arraylist recursion-and-backtracking stacks-and-queues hashmap-and-heaps searching-sorting-algorithms trie-and-trees