LeetCode

Welcome to my LeetCode Repo! Here I post all of my answers.

Problems

#	Title	Solution	Difficulty
1	Two Sum	C++, Python	Easy
2	Add Two Numbers	C++,	Medium
3	Longest Substring Without Repeating Characters	C++,	Medium
4	Median of Two Sorted Arrays	C++,	Hard
5	Longest Palindromic Substring	C++,	Medium
6	ZigZag Conversion	C++,	Medium
7	Reverse Integer	C++,	Medium
8	String to Integer (atoi)	C++,	Medium
9	Palindrome Number	C++,	Easy
11	Container With Most Water	C++,	Medium
12	Integer to Roman	C++,	Medium
24	Swap Nodes in Pairs	C++,	Medium
27	Remove Element	C++,	Easy
31	Next Permutation	C++,	Medium
36	Valid Sudoku	C++,	Medium
41	First Missing Positive	C++,	Hard
43	Multiply Strings	C++,	Medium
45	Jump Game 2	C++,	Medium
49	Group Anagrams	C++,	Medium
55	Jump Game	C++,	Medium
58	Length of Last Word	C++,	Easy
72	Edit Distance	C++,	Hard
75	Sort Colors	C++,	Medium
79	Word Search	C++,	Medium
80	Remove duplicates from sorted array 2	C++,	Hard
94	Binary Tree Inorder Traversal	C++,	Easy
110	Balanced Binary Tree	C++,	Easy
118	Pascal's Triangle	C++,	Easy
119	Pascal's Triangle 2	C++,	Easy
128	Longest Consecutive Sequence	C++,	Medium
129	Sum Root to Leaf Numbers	C++,	Medium
141	Linked List Cycle	C++,	Easy
143	Reorder List	C++,	Medium
145	Binary Tree Postorder Traversal	C++,	Easy
165	Compare Version Numbers	C++,	Medium
167	Two Sum 2 - Input Array is Sorted	C++,	Medium
175	Combine Two Tables	SQL,	Easy
176	Second Highest Salary	SQL,	Easy
178	Rank Scores	SQL,	Medium
191	Number of 1 Bits	C++,	Easy
200	Number of Islands	C++,	Medium
205	Isomorphic Strings	C++,	Easy
217	Contains Duplicate	C++,	Easy
227	Basic Calculator	C++,	Medium
234	Palindrome Linked List	C++,	Easy
237	Delete Node in a Linked List	C++,	Medium
238	Product of Array Except Self	C++,	Medium
242	Valid Anagram	C++,	Easy
260	Single Number 3	C++,	Medium
264	Ugly Number 2	C++,	Medium
268	Missing Number	C++,	Easy
287	Find the Duplicate Number	C++,	Medium
330	Patching Array	C++,	Hard
344	Reverse String	C++,	Easy
347	First K Frequent Elements	C++,	Medium
349	Intersection of two Arrays	C++,	Easy
350	Intersection of Two Arrays 2	C++,	Easy
365	Water and Jug Problem	C++ ,	Medium
380	Insert, Delete, GetRandom O(1)	C++ ,	Medium
387	First Unique Character in a String	C++ ,	Easy
427	Construct Quad Tree	C++ ,	Medium
432	All O'One Data Structure	C++ ,	Hard
442	Find All Duplicates in an Array	C++ ,	Medium
443	String Compression	C++ ,	Medium
446	Arithmetic Slices 2	C++ ,	Hard
448	Find All Numbers Disappeared in an Array	C++ ,	Easy
451	Sort Characters by Frequency	C++ ,	Medium
452	Minimum Number of Arrows to Burst Balloons	C++ ,	Medium
454	4 Sum II	C++ ,	Medium
455	Assign Cookies	C++ ,	Easy
463	Island Perimeter	C++ ,	Easy
476	Number Complement	C++ ,	Easy
485	Max Consecutive Ones	C++ ,	Easy
506	Relative Ranks	C++ ,	Easy
523	Continuous Subarray Sum	C++ ,	Medium
525	Contiguous Array	C++ ,	Medium
567	Permutation in String	C++ ,	Medium
590	N-Ary Tree Postorder Traversal	C++ ,	Easy
606	Construct String From Binary Tree	C++ ,	Easy
621	Task Scheduler	C++ ,	Medium
623	Add One Row to Tree	C++ ,	Medium
633	Sum of Square Numbers	C++ ,	Medium
648	Replace Words	C++ ,	Medium
652	Find Duplicate Subtrees	C++ ,	Medium
657	Robot Return to Origin	C++ ,	Easy
661	Image Smoother	C++ ,	Easy
690	Employee Importance	C++ ,	Medium
703	Kth Largest Element in a Stream	C++ ,	Easy
725	Split Linked List in Parts	C++ ,	Medium
767	Reorganize String	C++ ,	Medium
791	Custom Sort String	C++,	Medium
792	Number of Matching Subsequences	C++,	Medium
830	Positions of Large Groups	C++,	Easy
840	Magic Squares in Grid	C++,	Medium
860	Lemonade Change	C++,	Easy
867	Transpose Matrix	C++,	Easy
872	Leaf Similar Trees	C++,	Easy
876	Middle of the Linked List	C++,	Easy
881	Boats to Save People	C++,	Medium
912	Sort an Array	C++,	Medium
935	Knight Dialer	C++,	Medium
938	Range Sum of BST	C++,	Easy
945	Minimum Increment to Make Array Unique	C++,	Medium
948	Bag of Tokens	C++,	Medium
979	Distribute Coins in Binary Tree	C++,	Medium
988	Smallest String Starting From Leaf	C++,	Medium
992	Sub Arrays With K Different Integers	C++,	Hard
1054	Distant Barcodes	C++,	Medium
1035	Uncrossed Lines	C++,	Medium
1155	Number of Dice Rolls with Target Sum	C++,	Medium
1160	Find Words That Can Be Formed by Characters	C++,	Easy
1207	Unique Number of Occurrences	C++,	Easy
1249	Minimum Remove to Make Valid Parentheses	C++,	Medium
1266	Minimum Time Visiting All Points	C++,	Easy
1282	Group the People Given the Group Size They Belong To	C++,	Medium
1287	Elements Appearing More Than 25% In Sorted Array	C++,	Easy
1325	Delete Leaves With a Given Value	C++,	Medium
1331	Rank Transform of an Array	C++,	Easy
1367	Linked List in Binary Tree	C++,	Medium
1380	Lucky Numbers in a Matrix	C++,	Easy
1422	Maximum Score After Splitting a String	C++,	Easy
1424	Diagonal Traverse 2	C++,	Medium
1436	Destination City	C++,	Easy
1457	Pseudo Palindromic Paths in a Binary Tree	C++,	Medium
1464	Maximum Product of Two Elements in an Array	C++,	Easy
1480	Running Sum of 1d Array	C++,	Easy
1492	The Kth Factor of N	C++,	Medium
1496	Path Crossing	C++,	Easy
1518	Water Bottles	C++,	Medium
1523	Count Odd Numbers in an Interval Range	C++,	Easy
1531	String Compression 2	C++,	Hard
1544	Make the String Great	C++,	Medium
1550	Three Consecutive Odds	C++,	Easy
1552	Magnetic Force Between Two Balls	C++,	Medium
1561	Maximum Number of Coins You Can Get	C++,	Medium
1578	Minimum Time to Make Rope Colorful	C++,	Medium
1582	Special Positions in a Binary Matrix	C++,	Easy
1592	Rearrange Spaces Between Words	Python ,	Easy
1598	Crawler Log Folder	C++ ,	Easy
1611	Minimum One Bit Operations to Make Integers Zero	C++ ,	Medium
1614	Maximum Depth of the Parentheses	C++ ,	Easy
1624	Largest Substring Between Two Equal Characters	C++ ,	Easy
1630	Arithmetic Sub Arrays	C++ ,	Medium
1636	Sort Array by Increasing Frequency	C++ ,	Easy
1637	Widest Vertical Area Between Two Points Containing No Points	C++ ,	Medium
1662	Check If Two String Arrays are Equivalent	C++ ,	Easy
1669	Merge in Between Linked Lists	C++ ,	Medium
1684	Count the Number of Consistent Strings	C++ ,	Easy
1685	Sum of Absolute Differences in a Sorted Array	C++ ,	Medium
1688	Count of Matches in Tournament	C++ ,	Easy
1701	Average Waiting Time	C++ ,	Medium
1716	Calculate Money in Leetcode Bank	C++ ,	Easy
1717	Maximum Score From Removing Substrings	C++ ,	Medium
1727	Largest Sub-Matrix with Re-arrangements	C++ ,	Medium
1754	Largest Merge Of Two Strings	C++ ,	Medium
1758	Minimum Changes To Make Alternating Binary String	C++ ,	Easy
1791	Find Center of Star Graph	C++ ,	Easy
1800	Maximum Ascending Sub Array Sum	C++ ,	Easy
1812	Determine Color of a Chessboard Square	C++,	Easy
1814	Count Nice Pairs in Array	C++,	Medium
1832	Check if the Sentence Is Pangram	C++,	Easy
1838	Frequency of the Most Frequent Element	C++,	Medium
1877	Minimize Maximum Pair Sum in Array	C++,	Medium
1887	Reduction Operations to Make the Array Elements Equal	C++,	Medium
1897	Redistribute Characters To Make All Strings Equal	C++,	Easy
1903	Largest Odd Number in String	C++,	Easy
1905	Count Sub Islands	C++,	Medium
1913	Maximum Product Difference Between Two Pairs	C++,	Easy
1930	Unique Length of 3 Palindromic Subsequence	C++,	Medium
1962	Remove Stones to Minimize the Total	C++,	Medium
1980	Find Unique Binary String	C++,	Medium
2000	Reverse Prefix of Word	C++,	Easy
2037	Minimum Number of Moves to Seat Everyone	C++,	Easy
2058	Find the Minimum and Maximum Number of Nodes Between Critical Points	C++,	Medium
2073	Time Needed to Buy Tickets	C++,	Easy
2125	Number of Laser Beams in a Bank	C++,	Medium
2133	Check if Every Row and Column Contains All Numbers	C++,	Easy
2147	Number of Ways to Divide a Long Corridor	C++,	Hard
2191	Sort the Jumbled Numbers	C++,	Medium
2196	Create Binary Tree From Descriptions	C++,	Medium
2220	Minimum Bit Flips to Convert Number	C++,	Easy
2264	Largest 3 Same Digit Number in String	C++,	Easy
2285	Maximum Total Importance of Roads	C++,	Medium
2309	Greatest English Letter in Upper and Lower Case	C++,	Easy
2331	Evaluate Boolean Binary Tree	C++,	Easy
2360	Longest Cycle in a Graph	C++,	Hard
2353	Design a Food Rating System	C++,	Medium
2363	Merge Similar Items	C++,	Easy
2373	Largest Local Values in a Matrix	C++,	Easy
2391	Minimum Amount of Time to Collect Garbage	C++,	Medium
2405	Optimal Partition of String	C++,	Medium
2418	Sort the People	C++,	Easy
2441	Largest Positive Integer that Exists with its Negative	C++,	Easy
2444	Count Subarrays With Fixed Bounds	C++,	Hard
2482	Difference Between Ones and Zeros in Row and Column	C++,	Medium
2485	Find the Pivot Integer	C++,	Easy
2486	Append Characters to String to Make Subsequence	C++,	Medium
2491	Divide Players into Teams of Equal Skill	C++,	Medium
2540	Minimum Common Value	C++,	Easy
2582	Pass the Pillow	C++,	Easy
2610	Convert an Array Into a 2D Array With Conditions	C++,	Medium
2657	Find the Prefix Common Array of Two Arrays	C++,	Medium
2678	Number of Senior Citizens	C++,	Easy
2706	Buy Two Chocolates	C++,	Easy
2751	Robot Collisions	C++,	Hard
2785	Sort Vowels in a String	C++,	Medium
2816	Double a Number Represented as a Linked List	C++,	Medium
2864	Maximum Odd Binary Number	C++,	Easy
2870	Minimum Number of Operations to Make Array Empty	C++,	Medium
2958	Length of Longest Subarray With at Most K Frequency	C++,	Medium
2997	Minimum Number of Operations to Make Array XOR Equal to K	C++,	Medium
3005	Count Elements With Maximum Frequency	C++,	Easy
3016	Minimum Number of Pushes to Type Word 2	C++,	Medium
3075	Maximize Happiness of Selected Children	C++,	Medium
3217	Delete Nodes From Linked List Present in Array	C++,	Medium