LeetCode Algorithm

    (Notes: "🔒" means you need to buy a book from Leetcode)

    # Title Solution Difficulty
    1946 Largest Number After Mutating Substring C++ Medium
    1945 Sum of Digits of String After Convert C++ Easy
    1935 Maximum Number of Words You Can Type C++ Easy
    1884 Egg Drop With 2 Eggs and N Floors C++ Medium
    1882 Process Tasks Using Servers C++ Medium
    1881 Maximum Value after Insertion C++ Medium
    1880 Check if Word Equals Summation of Two Words C++ Easy
    1877 Minimize Maximum Pair Sum in Array C++ Medium
    1876 Substrings of Size Three with Distinct Characters C++ Easy
    1871 Jump Game VII C++ Medium
    1870 Minimum Speed to Arrive on Time C++ Medium
    1869 Longer Contiguous Segments of Ones than Zeros C++ Easy
    1862 Sum of Floored Pairs C++ Hard
    1861 Rotating the Box C++ Medium
    1860 Incremental Memory Leak C++ Medium
    1859 Sorting the Sentence C++ Easy
    1857 Largest Color Value in a Directed Graph C++ Hard
    1856 Maximum Subarray Min-Product C++ Medium
    1855 Maximum Distance Between a Pair of Values C++ Medium
    1854 Maximum Population Year C++ Easy
    1851 Minimum Interval to Include Each Query C++ Hard
    1850 Minimum Adjacent Swaps to Reach the Kth Smallest Number C++ Medium
    1849 Splitting a String Into Descending Consecutive Values C++ Medium
    1848 Minimum Distance to the Target Element C++ Easy
    1847 Closest Room C++ Hard
    1846 Maximum Element After Decreasing and Rearranging C++ Medium
    1845 Seat Reservation Manager C++ Medium
    1844 Replace All Digits with Characters C++ Easy
    1840 Maximum Building Height C++ Hard
    1839 Longest Substring Of All Vowels in Order C++ Medium
    1838 Frequency of the Most Frequent Element C++ Medium
    1837 Sum of Digits in Base K C++ Easy
    1835 Find XOR Sum of All Pairs Bitwise AND C++ Hard
    1834 Single-Threaded CPU C++ Medium
    1833 Maximum Ice Cream Bars C++ Medium
    1832 Check if the Sentence Is Pangram C++ Easy
    1829 Maximum XOR for Each Query C++ Medium
    1828 Queries on Number of Points Inside a Circle C++ Medium
    1827 Minimum Operations to Make the Array Increasing C++ Easy
    1825 Finding MK Average C++ Hard
    1824 Minimum Sideway Jumps C++ Medium
    1823 Find the Winner of the Circular Game C++ Medium
    1822 Sign of the Product of an Array C++ Easy
    1819 Number of Different Subsequences GCDs C++ Hard
    1818 Minimum Absolute Sum Difference C++ Medium
    1817 Finding the Users Active Minutes C++ Medium
    1816 Truncate Sentence C++ Easy
    1815 Maximum Number of Groups Getting Fresh Donuts C++ Hard
    1814 Count Nice Pairs in an Array C++ Medium
    1813 Sentence Similarity III C++ Medium
    1812 Determine Color of a Chessboard Square C++ Easy
    1808 Maximize Number of Nice Divisors C++ Hard
    1807 Evaluate the Bracket Pairs of a String C++ Medium
    1806 Minimum Number of Operations to Reinitialize a Permutation C++ Medium
    1805 Number of Different Integers in a String C++ Easy
    1803 Count Pairs With XOR in a Range C++ Hard
    1802 Maximum Value at a Given Index in a Bounded Array C++ Medium
    1801 Number of Orders in the Backlog C++ Medium
    1800 Maximum Ascending Subarray Sum C++ Easy
    1799 Maximize Score After N Operations C++ Hard
    1798 Maximum Number of Consecutive Values You Can Make C++ Medium
    1797 Design Authentication Manager C++ Medium
    1796 Second Largest Digit in a String C++ Easy
    1793 Maximum Score of a Good Subarray C++ Hard
    1792 Maximum Average Pass Ratio C++ Medium
    1791 Find Center of Star Graph C++ Medium
    1790 Check if One String Swap Can Make Strings Equal C++ Easy
    1787 Make the XOR of All Segments Equal to Zero C++ Hard
    1786 Number of Restricted Paths From First to Last Node C++ Medium
    1785 Minimum Elements to Add to Form a Given Sum C++ Medium
    1784 Check if Binary String Has at Most One Segment of Ones C++ Easy
    1782 Count Pairs Of Nodes C++ Hard
    1781 Sum of Beauty of All Substrings C++ Medium
    1780 Check if Number is a Sum of Powers of Three C++ Medium
    1779 Find Nearest Point That Has the Same X or Y Coordinate C++ Easy
    1775 Equal Sum Arrays With Minimum Number of Operations C++ Medium
    1774 Closest Dessert Cost C++ Medium
    1773 Count Items Matching a Rule C++ Easy
    1771 Maximize Palindrome Length From Subsequences C++ Hard
    1770 Maximum Score from Performing Multiplication Operations C++ Medium
    1769 Minimum Number of Operations to Move All Balls to Each Box C++ Medium
    1768 Merge Strings Alternately C++ Easy
    1766 Tree of Coprimes C++ Hard
    1765 Map of Highest Peak C++ Medium
    1764 Form Array by Concatenating Subarrays of Another Array C++ Medium
    1763 Longest Nice Substring C++ Easy
    1761 Minimum Degree of a Connected Trio in a Graph C++ Hard
    1760 Minimum Limit of Balls in a Bag C++ Medium
    1759 Count Number of Homogenous Substrings C++ Medium
    1758 Minimum Changes To Make Alternating Binary String C++ Easy
    1755 Closest Subsequence Sum C++ Hard
    1754 Largest Merge Of Two Strings C++ Medium
    1753 Maximum Score From Removing Stones C++ Medium
    1752 Check if Array Is Sorted and Rotated C++ Easy
    1751 Maximum Number of Events That Can Be Attended II C++ Hard
    1750 Minimum Length of String After Deleting Similar Ends C++ Medium
    1749 Maximum Absolute Sum of Any Subarray C++ Medium
    1748 Sum of Unique Elements C++ Easy
    1743 Restore the Array From Adjacent Pairs C++ Medium
    1742 Maximum Number of Balls in a Box C++ Easy
    1739 Building Boxes C++ Hard
    1738 Find Kth Largest XOR Coordinate Value C++ Medium
    1736 Latest Time by Replacing Hidden Digits C++ Easy
    1734 Decode XORed Permutation C++ Medium
    1733 Minimum Number of People to Teach C++ Medium
    1732 Find the Highest Altitude C++ Easy
    1727 Largest Submatrix With Rearrangements C++ Medium
    1726 Tuple with Same Product C++ Medium
    1725 Number Of Rectangles That Can Form The Largest Square C++ Easy
    1718 Construct the Lexicographically Largest Valid Sequence C++ Medium
    1717 Maximum Score From Removing Substrings C++ Medium
    1716 Calculate Money in Leetcode Bank C++ Easy
    1712 Ways to Split Array Into Three Subarrays C++ Medium
    1711 Count Good Meals C++ Medium
    1710 Maximum Units on a Truck C++ Easy
    1700 Number of Students Unable to Eat Lunch C++ Easy
    1695 Maximum Erasure Value C++ Medium
    1694 Reformat Phone Number C++ Easy
    1625 Lexicographically Smallest String After Applying Operations C++ Medium
    1624 Largest Substring Between Two Equal Characters C++ Easy
    1605 Find Valid Matrix Given Row and Column Sums C++ Medium
    1573 Number of Ways to Split a String C++ Medium
    1556 Thousand Separator C++ Easy
    1551 Minimum Operations to Make Array Equal C++ Medium
    1550 Three Consecutive Odds C++ Easy
    1541 Minimum Insertions to Balance a Parentheses String C++ Medium
    1535 Find the Winner of an Array Game C++ Medium
    1529 Bulb Switcher IV C++ Medium
    1528 Shuffle String C++ Easy
    1525 Number of Good Ways to Split a String C++ Medium
    1524 Number of Sub-arrays With Odd Sum C++ Medium
    1523 Count Odd Numbers in an Interval Range C++ Easy
    1513 Number of Substrings With Only 1s C++ Medium
    1470 Shuffle the Array C++ Easy
    1464 Maximum Product of Two Elements in an Array C++ Easy
    1460 Make Two Arrays Equal by Reversing Sub-arrays C++ Easy
    1376 Time Needed to Inform All Employees C++ Medium
    1375 Bulb Switcher III C++ Medium
    1353 Maximum Number of Events That Can Be Attended C++ Medium
    1333 Filter Restaurants by Vegan-Friendly, Price and Distance C++ Medium
    1207 Unique Number of Occurrences C++ Easy
    1170 Compare Strings by Frequency of the Smallest Character C++ Easy
    1071 Greatest Common Divisor of Strings C++ Easy
    1030 Matrix Cells in Distance Order C++ Easy
    1029 Two City Scheduling C++ Easy
    1028 Recover a Tree From Preorder Traversal C++ Hard
    1024 Video Stitching C++ Medium
    993 Cousins in Binary Tree C++ Easy
    991 Broken Calculator C++ Medium
    990 Satisfiability of Equality Equations C++ Medium
    989 Add to Array-Form of Integer C++ Easy
    988 Smallest String Starting From Leaf C++ Medium
    987 Vertical Order Traversal of a Binary Tree C++ Medium
    986 Interval List Intersections C++ Medium
    985 Sum of Even Numbers After Queries C++ Easy
    984 String Without AAA or BBB C++ Easy
    983 Minimum Cost For Tickets C++ Medium
    982 Triples with Bitwise AND Equal To Zero C++ Hard
    981 Time Based Key-Value Store C++ Medium
    980 Unique Paths III C++,Python Hard
    979 Distribute Coins in Binary Tree C++ Medium
    978 Longest Turbulent Subarray C++,Python Medium
    977 Squares of a Sorted Array C++, Python Easy
    976 Largest Perimeter Triangle C++, Python Easy
    971 Flip Binary Tree To Match Preorder Traversal Python Medium
    969 Pancake Sorting Python Medium
    961 N-Repeated element in size 2N Array C++ Easy
    958 Check Completeness of a Binary Tree Python Medium
    951 Flip Equivalent Binary Trees Python Medium
    950 Reveal Cards In Increasing Order Python Medium
    941 Valid Mountain Array Python Easy
    933 Number of Recent Calls C++ Easy
    931 Minimum Falling Path Sum C++ Medium
    929 Unique Email Addresses C++ Easy
    922 Sort Array By Parity II C++ Easy
    914 X of a Kind in a Deck of Cards Python Easy
    905 Sort Array By Parity C++ Easy
    876 Middle of the Linked List Python Easy
    859 Buddy Strings C++ Easy
    858 Mirror Reflection C++ Medium
    852 Peak Index in a Mountain Array C++ Easy
    849 Maximize Distance to Closest Person Python Easy
    844 Backspace String Compare C++ Easy
    837 Most Common Word C++ Easy
    830 Positions of Large Groups Python Easy
    820 Short Encoding of Words C++ Medium
    804 Unique Morse Code Words C++ Easy
    771 Jewels and Stones C++ Easy
    747 Largest Number At Least Twice of Others Python Easy
    746 Min Cost Climbing Stairs C++, Python Easy
    721 Accounts Merge C++ Medium
    717 1-bit and 2-bit Characters Python Easy
    714 Best Time to Buy and Sell Stock with Transaction Fee C++ Medium
    712 Minimum ASCII Delete Sum for Two Strings C++ Medium
    695 Max Area of Island C++ Medium
    687 Longest Univalue Path Python Easy
    684 Redundant Connection Python Medium
    674 Longest Continuous Increasing Subsequence Python Easy
    672 Bulb Switcher II C++ Medium
    671 Second Minimum Node In a Binary Tree Python Easy
    665 Non-decreasing Array Python Easy
    662 Maximum Width of Binary Tree Python Medium
    661 Image Smoother Python Easy
    655 Print Binary Tree Python Medium
    652 Find Duplicate Subtrees Python Medium
    647 Palindromic Substrings C++ Medium
    643 Maximum Average Subarray I C++, Python Easy
    628 Maximum Product of Three Numbers Python Easy
    623 Add One Row to Tree Python Medium
    581 Shortest Unsorted Continuous Subarray Python Easy
    572 Subtree of Another Tree Python Easy
    563 Binary Tree Tilt Python Easy
    547 Friend Circles C++ Medium
    543 Diameter of Binary Tree C++, Python Easy
    538 Convert BST to Greater Tree Python Easy
    532 K-diff Pairs in an Array Python Easy
    520 Detect Capital C++ Easy
    518 Coin Change 2 C++ Medium
    516 Longest Palindromic Subsequence C++ Medium
    509 Fibonacci Number C++, Python Easy
    497 Random Point in Non-overlapping Rectangles C++ Medium
    494 Target Sum C++ Medium
    477 Total Hamming Distance C++ Medium
    463 Island Perimeter C++ Easy
    450 DeleteNodeInABST Python Medium
    449 Serialize and Deserialize BST Python Medium
    438 Find all Anagrams in a string C++ Medium
    437 Path Sum III Python Medium
    418 SentenceScreenFitting 🔒 C++ Easy
    416 Partition Equal Subset Sum C++ Medium
    415 Add Strings C++ Easy
    414 Third Maximum Number C++, Python Easy
    413 Arithmetic Slices C++ Medium
    412 Fizz Buzz C++ Easy
    410 Split Array Largest Sum C++ Hard
    409 Longest Palindrome C++ Easy
    406 Queue Reconstruction by Height C++ Medium
    405 Convert a Number to Hexadecimal C++ Easy
    404 Sum of Left Leaves C++, Python Easy
    403 Frog Jump C++ Hard
    402 Remove K Digits C++ Medium
    401 Binary Watch C++ Easy
    400 Nth Digit C++ Medium
    399 Evaluate Division C++ Medium
    398 Random Pick Index C++ Medium
    397 Integer Replacement C++ Medium
    396 Rotate Function C++ Easy
    395 Longest Substring with At Least K Repeating Characters C++ Medium
    394 Decode String C++ Medium
    393 UTF-8 Validation C++ Medium
    392 Is Subsequence C++ Medium
    391 Perfect Rectangle C++ Hard
    390 Elimination Game C++ Medium
    389 Find the Difference C++ Easy
    388 Longest Absolute File Path C++ Medium
    387 First Unique Character in a String C++ Easy
    386 Lexicographical Numbers C++ Medium
    385 Mini Parser C++ Medium
    384 Shuffle an Array C++ Medium
    383 Ransom Note C++ Easy
    382 Linked List Random Node C++ Medium
    381 Insert Delete GetRandom O(1) - Duplicates allowed C++ Hard
    380 Insert Delete GetRandom O(1) C++ Hard
    377 Combination Sum IV C++ Medium
    376 Wiggle Subsequence C++ Medium
    371 Sum of Two Integers C++ Easy
    367 Valid Perfect Square C++ Easy
    357 Count Numbers with Unique Digits C++ Medium
    350 Intersection of Two Arrays II C++ Easy
    349 Intersection of Two Arrays C++ Easy
    347 Top K Frequent Elements C++ Medium
    345 Reverse Vowels of a String C++ Easy
    344 Reverse String C++ Easy
    343 Integer Break C++ Medium
    342 Power of Four C++ Easy
    341 Flatten Nested List Iterator C++ Medium
    338 Counting Bits C++ Medium
    337 House Robber III C++, Python Medium
    336 Palindrome Pairs C++ Hard
    334 Increasing Triplet Subsequence C++ Medium
    332 Reconstruct Itinerary C++ Medium
    331 Verify Preorder Serialization of a Binary Tree C++ Medium
    330 Patching Array C++ Medium
    329 Longest Increasing Path in a Matrix C++ Medium
    328 Odd Even Linked List C++ Easy
    327 Count of Range Sum C++ Hard
    326 Power of Three C++ Easy
    324 Wiggle Sort II C++ Medium
    322 Coin Change C++ Medium
    321 Create Maximum Number C++ Hard
    319 Bulb Switcher C++ Medium
    318 Maximum Product of Word Lengths C++ Medium
    316 Remove Duplicate Letters C++ Hard
    315 Count of Smaller Numbers After Self C++ Hard
    313 Super Ugly Number C++ Medium
    312 Burst Balloons C++ Hard
    310 Minimum Height Trees C++ Medium
    309 Best Time to Buy and Sell Stock with Cooldown C++ Medium
    307 Range Sum Query - Mutable C++ Medium
    306 Additive Number C++ Medium
    304 Range Sum Query 2D - Immutable C++ Medium
    303 Range Sum Query - Immutable C++ Easy
    301 Remove Invalid Parentheses C++ Hard
    300 Longest Increasing Subsequence C++ Medium
    299 Bulls and Cows C++ Easy
    297 Serialize and Deserialize Binary Tree C++ Medium
    295 Find Median from Data Stream C++ Hard
    292 Nim Game C++ Easy
    290 Word Pattern C++ Easy
    289 Game of Life C++ Medium
    287 Find the Duplicate Number C++, Python Hard
    285 Inorder Successor in BST 🔒 Java Medium
    284 Peeking Iterator C++ Medium
    283 Move Zeroes C++ Easy
    282 Expression Add Operators C++ Hard
    279 Perfect Squares C++ Medium
    278 First Bad Version C++, Java Easy
    275 H-Index II C++ Medium
    274 H-Index C++ Medium
    273 Integer to English Words C++ Medium
    268 Missing Number C++ Medium
    264 Ugly Number II C++ Medium
    263 Ugly Number C++ Easy
    260 Single Number III C++ Medium
    258 Add Digits C++ Easy
    257 Binary Tree Paths C++ Easy
    242 Valid Anagram C++, Java Easy
    241 Different Ways to Add Parentheses C++, Python Medium
    240 Search a 2D Matrix II C++, Java, Python Medium
    239 Sliding Window Maximum C++ Hard
    238 Product of Array Except Self C++ Medium
    237 Delete Node in a Linked List C++ Easy
    236 Lowest Common Ancestor of a Binary Tree C++, Java, Python Medium
    235 Lowest Common Ancestor of a Binary Search Tree C++, Python Easy
    234 Palindrome Linked List C++ Easy
    233 Number of Digit One C++ Medium
    232 Implement Queue using Stacks C++, Java Easy
    231 Power of Two C++ Easy
    230 Kth Smallest Element in a BST C++, Python Medium
    229 Majority Element II C++ Medium
    228 Summary Ranges C++ Easy
    227 Basic Calculator II C++ Medium
    226 Invert Binary Tree C++ Easy
    225 Implement Stack using Queues C++, Java Medium
    224 Basic Calculator C++ Medium
    223 Rectangle Area C++ Easy
    222 Count Complete Tree Nodes C++, Python Medium
    221 Maximal Square C++ Medium
    220 Contains Duplicate III C++, Python Medium
    219 Contains Duplicate II C++, Python Easy
    218 The Skyline Problem C++ Hard
    217 Contains Duplicate C++ Easy
    216 Combination Sum III C++ Medium
    215 Kth Largest Element in an Array C++ Medium
    214 Shortest Palindrome C++ Hard
    213 House Robber II C++ Medium
    212 Word Search II C++ Hard
    211 Add and Search Word - Data structure design C++ Medium
    210 Course Schedule II C++ Medium
    209 Minimum Size Subarray Sum C++ Medium
    208 Implement Trie (Prefix Tree) C++ Medium
    207 Course Schedule C++ Medium
    206 Reverse Linked List C++, Java Easy
    205 Isomorphic Strings C++ Easy
    204 Count Primes C++ Easy
    203 Remove Linked List Elements C++ Easy
    202 Happy Number C++, Python Easy
    201 Bitwise AND of Numbers Range C++ Medium
    200 Number of Islands C++, Python Medium
    199 Binary Tree Right Side View C++ Medium
    198 House Robber C++, Python Easy
    191 Number of 1 Bits C++ Easy
    190 Reverse Bits C++ Easy
    189 Rotate Array C++, Java Easy
    188 Best Time to Buy and Sell Stock IV C++ Hard
    187 Repeated DNA Sequences C++ Medium
    186 Reverse Words in a String II 🔒 C++ Medium
    179 Largest Number C++ Medium
    174 Dungeon Game C++ Hard
    173 Binary Search Tree Iterator C++, Java, Python Medium
    172 Factorial Trailing Zeroes C++ Easy
    171 Excel Sheet Column Number C++ Easy
    170 Two Sum III - Data structure design 🔒 C++ Easy
    169 Majority Element C++ Easy
    168 Excel Sheet Column Title C++ Easy
    167 Two Sum II - Input array is sorted 🔒 C++ Medium
    166 Fraction to Recurring Decimal C++ Medium
    165 Compare Version Numbers C++ Easy
    164 Maximum Gap C++ Hard
    163 Missing Ranges 🔒 C++ Medium
    162 Find Peak Element C++, Java Medium
    161 One Edit Distance🔒 C++ Medium
    160 Intersection of Two Linked Lists C++ Easy
    159 Longest Substring with At Most Two Distinct Characters 🔒 C++ Hard
    158 Read N Characters Given Read4 II - Call multiple times 🔒 C++ Hard
    157 Read N Characters Given Read4 🔒 C++ Easy
    156 Binary Tree Upside Down 🔒 C++ Medium
    155 Min Stack C++, Java Easy
    154 Find Minimum in Rotated Sorted Array II C++ Hard
    153 Find Minimum in Rotated Sorted Array C++, Java Medium
    152 Maximum Product Subarray C++ Medium
    151 Reverse Words in a String C++, Java Medium
    150 Evaluate Reverse Polish Notation C++ Medium
    149 Max Points on a Line C++ Hard
    148 Sort List C++, Python Medium
    147 Insertion Sort List C++, Python Medium
    146 LRU Cache C++, Java Hard
    145 Binary Tree Postorder Traversal C++, Python Hard
    144 Binary Tree Preorder Traversal C++, Java Medium
    143 Reorder List C++, Python Medium
    142 Linked List Cycle II C++, Python Medium
    141 Linked List Cycle C++ Medium
    140 Word Break II C++ Hard
    139 Word Break C++ Medium
    138 Copy List with Random Pointer C++, Python Hard
    137 Single Number II C++ Medium
    136 Single Number C++ Medium
    135 Candy C++ Hard
    134 Gas Station C++ Medium
    133 Clone Graph C++ Medium
    132 Palindrome Partitioning II C++ Hard
    131 Palindrome Partitioning C++ Medium
    130 Surrounded Regions C++ Medium
    129 Sum Root to Leaf Numbers C++, Python Medium
    128 Longest Consecutive Sequence C++ Hard
    127 Word Ladder C++ Medium
    126 Word Ladder II C++ Hard
    125 Valid Palindrome C++, Java Easy
    124 Binary Tree Maximum Path Sum C++, Java Hard
    123 Best Time to Buy and Sell Stock III C++ Hard
    122 Best Time to Buy and Sell Stock II C++ Medium
    121 Best Time to Buy and Sell Stock C++ Medium
    120 Triangle C++, Java Medium
    119 Pascal's Triangle II C++ Easy
    118 Pascal's Triangle C++ Easy
    117 Populating Next Right Pointers in Each Node II C++, Python Hard
    116 Populating Next Right Pointers in Each Node C++, Python Medium
    115 Distinct Subsequences C++ Hard
    114 Flatten Binary Tree to Linked List C++, Python Medium
    113 Path Sum II C++, Python Medium
    112 Path Sum C++ Easy
    111 Minimum Depth of Binary Tree C++ Easy
    110 Balanced Binary Tree C++, Java Easy
    109 Convert Sorted List to Binary Search Tree C++ Medium
    108 Convert Sorted Array to Binary Search Tree C++ Medium
    107 Binary Tree Level Order Traversal II C++ Easy
    106 Construct Binary Tree from Inorder and Postorder Traversal C++, Python Medium
    105 Construct Binary Tree from Preorder and Inorder Traversal C++, Python Medium
    104 Maximum Depth of Binary Tree C++, Java Easy
    103 Binary Tree Zigzag Level Order Traversal C++, Python Medium
    102 Binary Tree Level Order Traversal C++, Java Easy
    101 Symmetric Tree C++ Easy
    100 Same Tree C++ Easy
    99 Recover Binary Search Tree C++ Hard
    98 Validate Binary Search Tree C++, Java, Python Medium
    97 Interleaving String C++ Hard
    96 Unique Binary Search Trees C++, Python Medium
    95 Unique Binary Search Trees II C++, Python Medium
    94 Binary Tree Inorder Traversal C++ Medium
    93 Restore IP Addresses C++ Medium
    92 Reverse Linked List II C++, Java, Python Medium
    91 Decode Ways C++ Medium
    90 Subsets II C++, Java Medium
    89 Gray Code C++ Medium
    88 Merge Sorted Array C++ Easy
    87 Scramble String C++ Hard
    86 Partition List C++, Python Medium
    85 Maximal Rectangle C++ Hard
    84 Largest Rectangle in Histogram C++ Hard
    83 Remove Duplicates from Sorted List C++ Easy
    82 Remove Duplicates from Sorted List II C++, Python Medium
    81 Search in Rotated Sorted Array II C++ Medium
    80 Remove Duplicates from Sorted Array II C++ Medium
    79 Word Search C++ Medium
    78 Subsets C++, Java, Python Medium
    77 Combinations C++ Medium
    76 Minimum Window Substring C++ Hard
    75 Sort Colors C++ Medium
    74 Search a 2D Matrix C++, Java Medium
    73 Set Matrix Zeroes C++ Medium
    72 Edit Distance C++ Hard
    71 Simplify Path C++ Medium
    70 Climbing Stairs C++, Java Easy
    69 Sqrt(x) C++ Medium
    68 Text Justification C++ Hard
    67 Add Binary C++ Easy
    66 Plus One C++ Easy
    65 Valid Number C++ Easy
    64 Minimum Path Sum C++, Java Medium
    63 Unique Paths II C++, Java Medium
    62 Unique Paths C++, Java Medium
    61 Rotate List C++ Medium
    60 Permutation Sequence C++ Medium
    59 Spiral Matrix II C++ Medium
    58 Length of Last Word C++, Java Easy
    57 Insert Interval C++ Hard
    56 Merge Intervals C++ Hard
    55 Jump Game C++, Python Medium
    54 Spiral Matrix C++ Medium
    53 Maximum Subarray C++, Java Medium
    52 N-Queens II C++ Hard
    51 N-Queens C++ Hard
    50 "Pow(x, n)" C++, Java Medium
    49 Group Anagrams C++ Medium
    48 Rotate Image C++ Medium
    47 Permutations II C++ Hard
    46 Permutations C++ Medium
    45 Jump Game II C++ Hard
    44 Wildcard Matching C++ Hard
    43 Multiply Strings C++ Medium
    42 Trapping Rain Water C++ Hard
    41 First Missing Positive C++, Python Hard
    40 Combination Sum II C++ Medium
    39 Combination Sum C++ Medium
    38 Count and Say C++, Java Easy
    37 Sudoku Solver C++ Hard
    36 Valid Sudoku C++ Easy
    35 Search Insert Position C++, Java Medium
    34 Search for a Range C++, Java Medium
    33 Search in Rotated Sorted Array C++, Java Hard
    32 Longest Valid Parentheses C++ Hard
    31 Next Permutation C++ Medium
    30 Substring with Concatenation of All Words C++ Hard
    29 Divide Two Integers C++ Medium
    28 Implement strStr() C++, Java Easy
    27 Remove Element C++ Easy
    26 Remove Duplicates from Sorted Array C++, Java Easy
    25 Reverse Nodes in k-Group C++ Hard
    24 Swap Nodes in Pairs C++ Medium
    23 Merge k Sorted Lists C++ Hard
    22 Generate Parentheses C++ Medium
    21 Merge Two Sorted Lists C++ Easy
    20 Valid Parentheses C++ Easy
    19 Remove Nth Node From End of List C++, Python Easy
    18 4Sum C++ Medium
    17 Letter Combinations of a Phone Number C++ Medium
    16 3Sum Closest C++ Medium
    15 3Sum C++ Medium
    14 Longest Common Prefix C++ Easy
    13 Roman to Integer C++ Easy
    12 Integer to Roman C++ Medium
    11 Container With Most Water C++, Java Medium
    10 Regular Expression Matching C++ Hard
    9 Palindrome Number C++, Java Easy
    8 String to Integer (atoi) C++ Easy
    7 Reverse Integer C++ Easy
    6 ZigZag Conversion C++ Easy
    5 Longest Palindromic Substring C++ Medium
    4 Median of Two Sorted Arrays C++ Hard
    3 Longest Substring Without Repeating Characters C++ Medium
    2 Add Two Numbers C++ Medium
    1 Two Sum C++, Go Easy


    LeetCode Shell

    # Title Solution Difficulty
    4 Tenth Line Bash Easy
    3 Transpose File Bash Medium
    2 Valid Phone Numbers Bash Easy
    1 Word Frequency Bash Medium


    # Title Solution Difficulty
    1 Search in a big sorted array Java Medium
    2 Search Range in Binary Search Tree Java Medium


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