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Records of problems encountered on leetcode platform
Index,Date,ID,Name,Level,Similar 1,10/12/19,16,3Sum Closest,Medium, 2,10/12/19,8,String to Integer (atoi),Medium, 3,10/12/19,62,Unique Paths,Medium, 4,10/12/19,6,ZigZag Conversion,Medium, 5,10/12/19,94,Binary Tree Inorder Traversal,Medium, 6,10/13/19,18,4Sum,Medium, 7,10/13/19,102,Binary Tree Level Order Traversal,Medium, 8,10/13/19,29,Divide Two Integers,Medium, 9,10/13/19,50,"Pow(x, n)",Medium, 10,10/13/19,74,Search a 2D Matrix,Medium, 11,10/13/19,55,Jump Game,Medium, 12,10/13/19,98,Validate Binary Search Tree,Medium, 13,10/16/19,12,Integer to Roman,Medium, 14,10/17/19,24,Swap Nodes in Pairs,Medium, 15,10/17/19,36,Valid Sudoku,Medium, 16,10/17/19,43,Multiply Strings,Medium, 17,10/23/19,40,Combination Sum II,Medium, 18,10/23/19,47,Permutations II,Medium, 19,10/23/19,55,Jump Game,Medium, 20,10/24/19,56,Merge Intervals,Medium, 21,10/24/19,64,Minimum Path Sum,Medium, 22,10/24/19,75,Sort Colors,Medium, 23,10/24/19,78,Subsets,Medium, 24,10/24/19,96,Unique Binary Search Trees,Medium, 25,10/25/19,105,Construct Binary Tree from Preorder and Inorder Traversal,Medium, 26,10/25/19,114,Flatten Binary Tree to Linked List,Medium, 27,11/15/19,138,Copy List with Random Pointer,Medium, 28,11/15/19,139,Word Break,Medium, 29,11/15/19,142,Linked List Cycle II,Medium, 30,12/25/19,148,Sort List,Medium, 31,12/26/19,152,Maximum Product Subarray,Medium, 32,12/26/19,200,Number of Islands,Medium, 33,12/26/19,207,Course Schedule,Medium, 34,1/7/20,215,Kth Largest Element in an Array,Medium, 35,1/7/20,147,Insertion Sort List,Medium, 36,1/7/20,179,Largest Number,Medium, 37,1/8/20,263,Ugly Number,Easy, 38,1/8/20,264,Ugly NUmber II,Medium, 39,1/9/20,313,Super Ugly Number,Medium, 40,1/9/20,347,Top K Frequent Elements,Medium, 41,1/9/20,373,Find K Pairs with Smallest Sums,Medium, 42,1/10/20,378,Kth Smallest Element in a Sorted Matrix,Medium, 43,1/10/20,451,Sort Characters By Frequency,Medium, 44,1/10/20,659,Split Array into Consecutive Subsequences,Medium, 45,1/10/20,692,Top K Frequent Words,Medium, 46,1/22/20,1072,Flip Columns For Maximum Number of Equal Rows,Medium, 47,1/22/20,1232,Check If It Is a Straight Line,Easy, 48,1/23/20,374,Guess Number Higher or Lower,Easy, ,,,,, 49,1/23/20,268,Missing Number,Easy,41 136 287 765 50,1/23/20,448,Find All Numbers Disappeared in an Array,Easy,41; 442 51,1/25/20,287,Find the Duplicate Number,Medium,41; 136; 142; 268; 645 52,1/25/20,41,First Missing Positive,Hard,268; 448; 287; 765 53,1/25/20,765,Couples Holding Hands,Hard,41; 268; 854 54,1/25/20,854,K-Similar Strings,Hard,765 55,1/25/20,136,Single Number,Easy,137; 260; 268; 287; 389 56,1/25/20,389,Find the Difference,Easy,136 57,1/25/20,645,Set Mismatch,Easy,287 58,1/26/20,137,Single Number II,Medium,136; 260 59,1/26/20,260,Single Number III,Medium,136; 137 60,1/26/20,442,Find All Duplicates in an Array,Medium,448 ,,,,, 61,2/15/20,53,Maximum Subarray,Easy,121 152 697 978 62,2/15/20,121,Best Time to Buy and Sell Stock,Easy,53 122 123 188 309 63,2/15/20,697,Degree of an Array,Easy,53 64,2/15/20,122,Best Time to Buy and Sell Stock II,Easy,121 123 188 309 714 65,2/16/20,198,House Robber,Easy,152 213 337 740 600 66,2/17/20,628,Maximum Product of Three Numbers,Easy,152 67,2/29/20,1,Two Sum,Easy,15 18 167 653 560 68,,724,Find Pivot Index,Easy,560 69,2/29/20,167,Two Sum II - Input array is sorted,Easy,1 653 70,2/29/20,653,Two Sum IV - Input is a BST,Easy,1 167 71,2/17/20,238,Product of Array Except Self,Medium,42 152 72,,713,Subarray Product Less Than K,Medium,560 152 73,2/16/20,309,Best Time to Buy and Sell Stock with Cooldown,Medium,121 122 74,2/16/20,714,Best Time to Buy and Sell Stock with Transaction Fee,Medium,122 75,2/16/20,152,Maximum Product Subarray,Medium,53 198 238 628 713 76,2/16/20,978,Longest Turbulent Subarray,Medium,53 77,2/29/20,560,Subarray Sum Equals K,Medium,1 523 713 724 974 78,2/16/20,213,House Robber II,Medium,198 337 600 79,2/16/20,337,House Robber III,Medium,198 213 80,2/16/20,740,Delete and Earn,Medium,198 81,,474,Ones and Zeroes,Medium,600 82,,11,Container With Most Water,Medium,42 83,,523,Continuous Subarray Sum,Medium,560 84,,974,Subarray Sums Divisible by K,Medium,560 85,2/29/20,15,3Sum,Medium,1 16 18 86,2/29/20,18,4Sum,Medium,1 15 454 87,,16,3Sum Closest,Medium,15 88,,454,4Sum II,Medium,18 89,2/16/20,123,Best Time to Buy and Sell Stock III,Hard,121 122 188 689 90,2/16/20,188,Best Time to Buy and Sell Stock IV,Hard,121 122 123 91,,689,Maximum Sum of 3 Non-Overlapping Subarrays,Hard,123 92,2/17/20,600,Non-negative Integers without Consecutive Ones,Hard,198 213 474 93,,42,Trapping Rain Water,Hard,11 407 238 94,,407,Trapping Rain Water II,Hard,42
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