leetcodesolutions

This repository will contain solutions of leetcode problems in C language.

Leetcode Profile - https://leetcode.com/akibislam/

Problem Solved - 270/1891

Problem Index:

Problem 1 - Two Sum Problem 2 - Add Two Numbers Problem 3 - Longest substring without repeating characters Problem 4 - Median of Two Sorted Arrays Problem 5 - Longest Palindromic Substring Problem 7 - Reverse Integer Problem 20 - Valid Paranthesis Problem 21 - Merge Two Sorted Lists Problem 24 - Swap Nodes in Pairs Problem 26 - Remove Duplicates from Sorted Array Problem 27 – Remove Element Problem 28 - Implement strStr() Problem 34 - Find First and Last Position of Element in Sorted Array Problem 35 - Search Insert Position Problem 53 - Maximum Subarray Probelm 66 - Plus One Problem 83 - Remove Duplicates from Sorted List Problem 86 - Partition List Problem 88 - Merge Sorted Array Problem 92 - Reverse Linked List II Problem 94 - Binary Tree Inorder Traversal Problem 98 - Validate Binary Search Tree Problem 100 - Same Tree Problem 101 - Symmetric Tree Problem 102 - Binary Tree Level Order Traversal Problem 104 - Maximum Depth of Binary Tree Problem 107 - Binary Tree Level Order Traversal II Problem 108 - Convert Sorted Array to Binary Search Tree Problem 110 - Balanced Binary Tree Problem 111 - Minimum Depth of Binary Tree Problem 112 - Path Sum Problem 113 - Path Sum II Problem 114 - Flatten Binary Tree to Linked List Problem 118 - Pascal's Triangle Problem 117 - Populating Next Right Pointers in Each Node II Problem 119 - Pascal's Triangle II Problem 121 - Best Time to Buy and Sell Stock Problem 122 - Best Time to Buy and Sell Stock II Problem 125 - Valid Palindrome Problem 129 - Sum Root to Leaf Numbers Problem 136 - Single Number Problem 141 - Linkedlist cycle Problem 142 - Linked List Cycle II Problem 144 - Binary Tree Preorder Traversal Problem 145 - Binary Tree Postorder Traversal Problem 155 - Min Stack Problem 160 - Intersection of Two Linked Lists Problem 167 - Two Sum II - Input array is sorted Problem 169 - Majority Element Problem 173 - Binary Search Tree Iterator Problem 199 - Binary Tree Right Side View Problem 203 - Remove Linked List Elements Problem 206 - Reverse Linked List Problem 217 - Contains Duplicate Problem 226 - Invert Binary Tree Problem 234 - Palindrome Linked List Problem 235 - Lowest Common Ancestor of a Binary Search Tree Problem 236 - Lowest Common Ancestor of a Binary Tree Problem 237 - Delete Node in a Linked List Problem 257 - Binary Tree Paths Problem 268 - Missing Number Problem 283 - Move Zeroes Problem 328 - Odd Even Linked List Problem 349 - Intersection of Two Arrays Problem 350 - Intersection of Two Arrays II Problem 404 - Sum of Left Leaves Problem 424 - Longest Repeating Character Replacement Problem 429 - N-ary Tree Level Order Traversal Problem 437 - Path Sum III Problem 445 - Add Two Numbers II Problem 448 - Find All Numbers Disappeared in an Array Problem 450 - Delete Node in a BST Problem 463 - Island Perimeter Problem 485 - Max Consecutive Ones Problem 495 - Teemo Attacking Problem 496 - Next Greater Element I Problem 500 - Keyboard Row Problem 501 - Find Mode in Binary Search Tree Problem 506 - Relative Ranks Problem 508 - Most Frequent Subtree Sum Problem 513 - Find Bottom Left Tree Value Problem 515 - Find Largest Value in Each Tree Row Problem 530 - Minimum Absolute Difference in BST Problem 538 - Convert BST to Greater Tree Problem 543 - Diameter of Binary Tree Problem 559 - Maximum Depth of N-ary Tree Problem 561 - Array Partition I Problem 563 - Binary Tree Tilt Problem 566 - Reshape the Matrix Problem 572 - Subtree of Another Tree Problem 575 - Distribute Candies Problem 589 - N-ary Tree Preorder Traversal Problem 590 - N-ary Tree Postorder Traversal Problem 599 - Minimum Index Sum of Two Lists Problem 606 - Construct String from Binary Tree Problem 617 - Merge Two Binary Trees Problem 637 - Average of Levels in Binary Tree Problem 643 - Maximum Average Subarray I Problem 653 - Two Sum IV - Input is a BST Problem 654 - Maximum Binary Tree Problem 661 - Image Smoother Problem 671 - Second Minimum Node In a Binary Tree Problem 682 - Baseball Game Problem 697 - Degree of an Array Problem 700 - Search in a binary search tree Problem 701 - Insert into a Binary Search Tree Problem 704 - Binary Search Problem 705 - Design HashSet Problem 706 - Design HashMap Problem 709 - To Lower Case Problem 725 - Split LinkedList in Parts Problem 766 - Toeplitz Matrix Problem 771 - Jewels and Stones Problem 783 - Minimum Distance Between BST Nodes Problem 804 - Unique Morse Code Words Problem 806 - Number of Lines To Write String Problem 811 - Subdomain Visit Count Problem 814 - Binary Tree Pruning Problem 817 - Linked List Components Problem 821 - Shortest Distance to a Character Problem 832 - Flipping an Image Problem 852 - Peak Index in a Mountain Array Problem 863 - All Nodes Distance K in Binary Tree Problem 865 - Smallest Subtree with all the Deepest Nodes Problem 867 - Transpose Matrix Problem 872 - Leaf-Similar Trees Problem 876 - Middle of the Linked List Problem 883 - Projection Area of 3D Shapes Problem 888 - Fair Candy Swap Problem 893 - Groups of Special-Equivalent Strings Problem 896 - Monotonic Array Problem 897 - Increasing Order Search Tree Problem 905 - Sort Array By Parity Problem 908 - Smallest Range I Problem 912 - Sort an Array Problem 919 - Complete Binary Tree Inserter Problem 922 - Sort Array By Parity II Problem 929 - Unique Email Addresses Problem 938 - Range Sum of BST Problem 944 - Delete Columns to Make Sorted Problem 951 - Flip Equivalent Binary Trees Problem 958 - Check Completeness of a Binary Tree Problem 961 - N-Repeated Element in Size 2N Array Problem 965 - Univalued Binary Tree Problem 976 - Largest Perimeter Triangle Problem 977 - Squares of a Sorted Array Problem 979 - Distribute Coins in Binary Tree Problem 985 - Sum of Even Numbers After Queries Problem 993 - Cousins in a binary tree Problem 998 - Maximum Binary Tree II Problem 999 - Available Captures for Rook Problem 1002- Find Common Characters Problem 1004- Max Consecutive Ones III Problem 1005- Maximize Sum Of Array After K Negations Problem 1008- Construct Binary Search Tree from Preorder Traversal Problem 1019- Next Greater Node In Linked List Problem 1021- Remove Outermost Parentheses Problem 1022- Sum of Root to Leaf Binary Numbers Problem 1026- Maximum Difference Between Node and Ancestor Problem 1030- Matrix Cells in Distance Order Problem 1038- Binary Search Tree to Greater Sum Tree Problem 1046- Last Stone Weight Problem 1047- Remove All Adjacent Duplicates In String Problem 1051- Height Checker Problem 1052- Grumpy Bookstore Owner Problem 1108- Defanging an IP Address Problem 1110- Delete Nodes And Return Forest Problem 1104- Path In Zigzag Labelled Binary Tree Problem 1122- Relative Sort Array Problem 1123- Lowest Common Ancestor of Deepest Leaves Problem 1160- Find Words That Can Be Formed by Characters Problem 1161- Maximum Level Sum of a Binary Tree Problem 1200- Minimum Absolute Difference Problem 1207- Unique Number of Occurrences Problem 1217- Minimum Cost to Move Chips to The Same Position Problem 1221- Split a string in balanced strings Problem 1252- Cells with Odd Values in a Matrix Problem 1260- Shift 2D Grid Problem 1261- Find Elements in a Contaminated Binary Tree Problem 1266- Minimum Time Visiting All Points Problem 1281- Subtract the Product and Sum of Digits of an Integer Problem 1287- Element Appearing More Than 25% In Sorted Array Problem 1290- Convert Binary Number in a Linked List to Integer Problem 1295- Find Numbers with Even Number of Digits Problem 1299- Replace Elements with Greatest Element on Right Side Problem 1302- Deepest Leaves Sum Problem 1304- Find N Unique Integers Sum up to Zero Problem 1305- All Elements in Two Binary Search Trees Problem 1309- Decrypt String from Alphabet to Integer Mapping Problem 1313- Decompress Run-Length Encoded List Problem 1315- Sum of Nodes with Even-Valued Grandparent Problem 1325- Delete Leaves With a Given Value Problem 1331- Rank Transform of an Array Problem 1337- The K Weakest Rows in a Matrix Problem 1339- Maximum Product of Splitted Binary Tree Problem 1342- Number of steps to reduce a number to zero Problem 1351- Count Negative Numbers in a Sorted Matrix Problem 1356- Sort Integers by The Number of 1 Bits Problem 1365- How Many Numbers Are Smaller Than the Current Number Problem 1367- Linked List in Binary Tree Problem 1379- Find a Corresponding Node of a Binary Tree in a Clone of That Tree Problem 1380- Lucky Numbers in a Matrix Problem 1382- Balance a Binary Search Tree Problem 1385- Find the Distance Value Between Two Arrays Problem 1389- Create Target Array in a given order Problem 1394- Find Lucky Integer in an Array Problem 1403- Minimum Subsequence in Non-Increasing Order Problem 1413- Minimum Value to Get Positive Step by Step Sum Problem 1431- Kids With the Greatest Number of Candies Problem 1437- Check If All 1's Are at Least Length K Places Away Problem 1441- Build an Array With Stack Operations Problem 1448- Count Good Nodes in Binary Tree Problem 1450- Number of Students Doing Homework at a Given Time Problem 1456- Maximum Number of Vowels in a Substring of Given Length Probelm 1457- Pseudo-Palindromic Paths in a Binary Tree Problem 1460- Make Two Arrays Equal by Reversing Sub-arrays Problem 1464- Maximum Product of Two Elements in an Array Problem 1470- Shuffle the Array Problem 1475- Final Prices With a Special Discount in a Shop Problem 1480- Running Sum of 1d Array Problem 1491- Average Salary Excluding the Minimum and Maximum Salary Problem 1502- Can Make Arithmetic Progression From Sequence Problem 1512- Number of Good Pairs Problem 1528- Shuffle String Problem 1530- Number of Good Leaf Nodes Pairs Problem 1534- Count Good Triplets Problem 1539- Kth Missing Positive Number Problem 1544- Make The String Great Problem 1550- Three Consecutive Odds Problem 1560- Most Visited Sector in a Circular Track Problem 1572- Matrix Diagonal Sum Problem 1582- Special Positions in a Binary Matrix Problem 1588- Sum of All Odd Length Subarrays Problem 1598- Crawler Log Folder Problem 1608- Special Array With X Elements Gr