├── Day-01_Arrays ├── DNF_sort.cpp ├── README.md ├── duplicate_number.cpp ├── kadanes_algorithm.cpp ├── merge_intervals.cpp ├── merge_sorted_arrays.cpp └── missing_repeating.cpp ├── Day-02_Arrays ├── README.md ├── buy_sell_stock_once.cpp ├── count_inversions.cpp ├── merge_sort.cpp ├── merge_sort.exe ├── next_permutation.cpp ├── pascal_triangle.cpp ├── rotate_matrix.cpp └── set_matrix_zeros.cpp ├── Day-03_Arrays_Maths ├── README.md ├── binary_expo.cpp ├── grid_unique_paths.cpp ├── majority_element_N2.cpp ├── majority_element_N3.cpp ├── reverse_pairs.cpp ├── search_2D_rowColSorted.cpp └── search_2D_snake.cpp ├── Day-04_Hashing ├── Four_sum.cpp ├── LongestConsecutiveSequence.cpp ├── README.md ├── Two_sum.cpp ├── repeated_chars.cpp ├── subarray_zero_sum.cpp ├── subarrays_xor.cpp └── subarrays_xor.exe ├── Day-05_LinkedList ├── README.md ├── add_2_numbers.cpp ├── delete_without_head.cpp ├── merge_sorted_list.cpp ├── middle_list.cpp ├── remove_nth_node.cpp └── reverse_list_iterative.cpp ├── Day-06_LinkedList ├── README.md ├── cycle_start.cpp ├── detect_cycle_list.cpp ├── flattening_list.cpp ├── intersection_Y.cpp ├── palindrome_list.cpp ├── reverse_groups_k.cpp └── rotate_list.cpp ├── Day-07_Two_Pointers ├── README.md ├── Three_sum.cpp ├── clone_list.cpp ├── max_consecutive_ones.cpp ├── remove_duplicates_sorted.cpp └── trapping_rainwater.cpp ├── Day-08_Greedy ├── N_meeting_one_room.cpp ├── README.md ├── activity_selection.cpp ├── coin_change.cpp ├── fractional_knapsack.cpp ├── job_sequencing.cpp └── min_platforms_railway.cpp ├── Day-09_Recursion ├── README.md ├── combination_sum.cpp ├── combination_sum_without_rep.cpp ├── generate_Subsequences_bitMasking.cpp ├── kth_permutation.cpp ├── palindrome_partitioning.cpp ├── subset_sum_duplicates.cpp └── subset_sums.cpp ├── Day-10_Backtracking ├── M_coloring.cpp ├── N_Queens.cpp ├── README.md ├── print_permutations.cpp ├── rat_maze.cpp ├── sudoku_solver.cpp └── word_break.cpp ├── Day-11_Binary_Search ├── README.md ├── aggressive_cows.cpp ├── allocate_min_pages.cpp ├── kth_2_sortedArrays.cpp ├── median_2_sortedArrays.cpp ├── median_row_sorted.cpp ├── nth_root.cpp ├── search_rotated.cpp └── single_element.cpp ├── Day-12_Bit_Manipulation ├── README.md ├── count_total_set_bits.cpp ├── countingBits.cpp ├── divide_numbers.cpp ├── find_MSB.cpp ├── powerOf2.cpp ├── power_set_bit.cpp ├── power_set_recursion.cpp ├── power_set_vector.cpp └── square_bit.cpp ├── Day-13_Stacks_Queues ├── README.md ├── balanced_parenthesis.cpp ├── next_greater_element_1.cpp ├── next_greater_element_2.cpp ├── queue_array.cpp ├── queue_using_stack.cpp ├── stack_array.cpp └── stack_using_queue.cpp ├── Day-14_Stacks ├── LRU_cache.cpp ├── README.md ├── get_min_pop.cpp ├── largest_rectangle_histogram_1.cpp ├── largest_rectangle_histogram_2.cpp ├── min_stack.cpp ├── nearest_smaller_element.cpp ├── rotten_oranges.cpp └── sliding_window_max.cpp ├── Day-15_Strings ├── README.md ├── integer_to_roman.cpp ├── longest_palindromic_substring.cpp ├── reverse_words.cpp └── roman_to_integer.cpp ├── Day-17_Binary_Tree ├── README.md ├── bottom_view.cpp ├── inorder_traversal.cpp ├── left_view.cpp ├── postorder_traversal.cpp ├── preorder_traversal.cpp ├── right_view.cpp └── top_view.cpp ├── Day-18_Binary_Tree ├── LCA.cpp ├── README.md ├── diameter.cpp ├── height_balanced.cpp ├── height_tree.cpp ├── identical_trees.cpp ├── levelorder.cpp └── levelorder_spiral.cpp ├── Day-19_Binary_Tree ├── README.md ├── check_mirror.cpp ├── flatten_tree_list.cpp ├── max_path_sum.cpp ├── mirror_n_ary.cpp ├── tree_in_postorder.cpp └── tree_in_preorder.cpp ├── Day-20_Binary_Search_Tree ├── LCA_BST.cpp ├── README.md ├── bst_array.cpp ├── check_BST_iterative.cpp ├── check_BST_range.cpp ├── inorder_pre_suc.cpp ├── inorder_successor.cpp ├── populate_next_pointers.cpp └── search_BST.cpp ├── Day-21_Binary_Search_Tree ├── README.md ├── bst_iterator.cpp ├── ceil_BST.cpp ├── floor_BST.cpp ├── kth_largest.cpp ├── kth_smallest.cpp ├── largest_BST.cpp ├── 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