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0001_Two_Sum.java
0001_Two_Sum.java
 
 
0002_Add_Two_Numbers.java
0002_Add_Two_Numbers.java
 
 
0003_Longest_Substring_Without_Repeating_Characters
0003_Longest_Substring_Without_Repeating_Characters
 
 
0004_Median_of_Two_Sorted_Arrays.java
0004_Median_of_Two_Sorted_Arrays.java
 
 
0005_Longest_Palindromic_Substring.java
0005_Longest_Palindromic_Substring.java
 
 
0006_Zigzag_Conversion.cpp
0006_Zigzag_Conversion.cpp
 
 
0006_Zigzag_Conversion.java
0006_Zigzag_Conversion.java
 
 
0007_Reverse_Integer.java
0007_Reverse_Integer.java
 
 
0008_String_to_Integer.java
0008_String_to_Integer.java
 
 
0009_Palindrome_Number.java
0009_Palindrome_Number.java
 
 
0010_Regular_Expression_Matching.java
0010_Regular_Expression_Matching.java
 
 
0011_Container_With_Most_Water.java
0011_Container_With_Most_Water.java
 
 
0012_Integer_to_Roman.java
0012_Integer_to_Roman.java
 
 
0013_Roman_to_Integer.java
0013_Roman_to_Integer.java
 
 
0014_Longest_Common_Prefix.java
0014_Longest_Common_Prefix.java
 
 
0015_3Sum.java
0015_3Sum.java
 
 
0016_3Sum_Closest.java
0016_3Sum_Closest.java
 
 
0017_Letter_Combinations_of_a_Phone_Number.java
0017_Letter_Combinations_of_a_Phone_Number.java
 
 
0018_4Sum.java
0018_4Sum.java
 
 
0019_Remove_Nth_Node_From_End_of_List.java
0019_Remove_Nth_Node_From_End_of_List.java
 
 
0020_Valid_Parentheses.java
0020_Valid_Parentheses.java
 
 
0021_Merge_Two_Sorted_Lists.java
0021_Merge_Two_Sorted_Lists.java
 
 
0022_Generate_Parentheses.java
0022_Generate_Parentheses.java
 
 
0023_Merge_k_Sorted_Lists.java
0023_Merge_k_Sorted_Lists.java
 
 
0024_Swap_Nodes_in_Pairs.java
0024_Swap_Nodes_in_Pairs.java
 
 
0025_Reverse_Nodes_in_k-Group.java
0025_Reverse_Nodes_in_k-Group.java
 
 
0026_Remove_Duplicates_from_Sorted_Array.java
0026_Remove_Duplicates_from_Sorted_Array.java
 
 
0027_Remove_Element.java
0027_Remove_Element.java
 
 
0028_Implement_strStr().java
0028_Implement_strStr().java
 
 
0029_Divide_Two_Integers.java
0029_Divide_Two_Integers.java
 
 
0030_Substring_with_Concatenation_of_All_Words.java
0030_Substring_with_Concatenation_of_All_Words.java
 
 
0031_Next_Permutation.java
0031_Next_Permutation.java
 
 
0032_Longest_Valid_Parentheses.java
0032_Longest_Valid_Parentheses.java
 
 
0033_Search_in_Rotated_Sorted_Array.java
0033_Search_in_Rotated_Sorted_Array.java
 
 
0034_Find_First_and_Last_Position_of_Element_in_Sorted_Array.java
0034_Find_First_and_Last_Position_of_Element_in_Sorted_Array.java
 
 
0035_Search_Insert_Position.java
0035_Search_Insert_Position.java
 
 
0036_Valid_Sudoku.java
0036_Valid_Sudoku.java
 
 
0037_Sudoku_Solver.java
0037_Sudoku_Solver.java
 
 
0038_Count_and_Say.java
0038_Count_and_Say.java
 
 
0039_Combination_Sum.java
0039_Combination_Sum.java
 
 
0040_Combination_Sum_II.java
0040_Combination_Sum_II.java
 
 
0041_First_Missing_Positive.java
0041_First_Missing_Positive.java
 
 
0042_Trapping_Rain_Water.cpp
0042_Trapping_Rain_Water.cpp
 
 
0042_Trapping_Rain_Water.java
0042_Trapping_Rain_Water.java
 
 
0042_Trapping_Rain_Water.py
0042_Trapping_Rain_Water.py
 
 
0043_Multiply_Strings.java
0043_Multiply_Strings.java
 
 
0044_Wildcard_Matching.java
0044_Wildcard_Matching.java
 
 
0045_Jump_Game_II.cpp
0045_Jump_Game_II.cpp
 
 
0045_Jump_Game_II.java
0045_Jump_Game_II.java
 
 
0046_Permutations.java
0046_Permutations.java
 
 
0047_Permutations_II.java
0047_Permutations_II.java
 
 
0048_Rotate_Image.java
0048_Rotate_Image.java
 
 
0049_Group_Anagrams.java
0049_Group_Anagrams.java
 
 
0050_Pow(x,n).java
0050_Pow(x,n).java
 
 
0051_N-Queens.java
0051_N-Queens.java
 
 
0052_N-Queens_II.java
0052_N-Queens_II.java
 
 
0053_Maximum_Subarray.java
0053_Maximum_Subarray.java
 
 
0054_Spiral_Matrix.java
0054_Spiral_Matrix.java
 
 
0055_Jump_Game.java
0055_Jump_Game.java
 
 
0056_Merge_Intervals.java
0056_Merge_Intervals.java
 
 
0057_Insert_Interval.java
0057_Insert_Interval.java
 
 
0058_Length_of_Last_Word.java
0058_Length_of_Last_Word.java
 
 
0059_Spiral_Matrix_II.java
0059_Spiral_Matrix_II.java
 
 
0060_Permutation_Sequence.java
0060_Permutation_Sequence.java
 
 
0061_Rotate_List.java
0061_Rotate_List.java
 
 
0062_Unique_Paths.java
0062_Unique_Paths.java
 
 
0063_Unique_Paths_II.java
0063_Unique_Paths_II.java
 
 
0064_Minimum_Path_Sum.java
0064_Minimum_Path_Sum.java
 
 
0065_Valid_Number.java
0065_Valid_Number.java
 
 
0066_Plus_One.java
0066_Plus_One.java
 
 
0067_Add_Binary.java
0067_Add_Binary.java
 
 
0068_Text_Justification.java
0068_Text_Justification.java
 
 
0069_Sqrt(x).java
0069_Sqrt(x).java
 
 
0070_Climbing_Stairs.java
0070_Climbing_Stairs.java
 
 
0071_Simplify_Path.java
0071_Simplify_Path.java
 
 
0072_Edit_Distance.java
0072_Edit_Distance.java
 
 
0073_Set_Matrix_Zeroes.java
0073_Set_Matrix_Zeroes.java
 
 
0074_Search_a_2D_Matrix.java
0074_Search_a_2D_Matrix.java
 
 
0075_Set_Colors.java
0075_Set_Colors.java
 
 
0076_Minimum_Window_Substring.java
0076_Minimum_Window_Substring.java
 
 
0077_Combinations.java
0077_Combinations.java
 
 
0078_Subsets.java
0078_Subsets.java
 
 
0079_Word_Search.java
0079_Word_Search.java
 
 
0079_Word_Search.rs
0079_Word_Search.rs
 
 
0080_Remove_Duplicates_From_Sorted_Array_II.java
0080_Remove_Duplicates_From_Sorted_Array_II.java
 
 
0081_Search_in_Rotated_Sorted_Array_II.java
0081_Search_in_Rotated_Sorted_Array_II.java
 
 
0082_Remove_Duplicates_from_Sorted_List_II.java
0082_Remove_Duplicates_from_Sorted_List_II.java
 
 
0083_Remove_Duplicates_from_Sorted_List.java
0083_Remove_Duplicates_from_Sorted_List.java
 
 
0084_Largest_Rectangle_in_Histogram.java
0084_Largest_Rectangle_in_Histogram.java
 
 
0085_Maximal_Rectangle.java
0085_Maximal_Rectangle.java
 
 
0086_Partition_List.java
0086_Partition_List.java
 
 
0087_Scramble_String.java
0087_Scramble_String.java
 
 
0088_Merge_Sorted_Array.java
0088_Merge_Sorted_Array.java
 
 
0089_Gray_Code.java
0089_Gray_Code.java
 
 
0090_Subsets_II.java
0090_Subsets_II.java
 
 
0091_Decode_Ways.java
0091_Decode_Ways.java
 
 
0091_Decode_Ways.rs
0091_Decode_Ways.rs
 
 
0092_Reverse_Linked_List_II.java
0092_Reverse_Linked_List_II.java
 
 
0093_Restore_IP_Addresses.cpp
0093_Restore_IP_Addresses.cpp
 
 
0093_Restore_IP_Addresses.java
0093_Restore_IP_Addresses.java
 
 

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Leetcode Solutions

A collection of solutions to data structure / algorithm problems on Leetcode.

  • Problems are numbered according to their problemset number on Leetcode
  • Most solutions are in Java or C++
  • Some problems have multiple solutions with different approaches

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