随笔分类 - Level 3
摘要：Given a 2D binary matrix filled with 0's and 1's, find the largest square containing all 1's and return its area. Given a 2D binary matrix filled with
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摘要：Given a 2D boolean matrix filled with False and True, find the largest rectangle containing all True and return its area. Given a 2D boolean matrix fi
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摘要：You are given an n x n 2D matrix representing an image.Rotate the image by 90 degrees (clockwise). You are given an n x n 2D matrix representing an im
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摘要：Word Ladder I Given two words (start and end), and a dictionary, find the length of shortest transformation sequence from start to end, such that: Onl
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摘要：Given a 2D board containing 'X' and 'O', capture all regions surrounded by 'X'. A region is captured by flipping all 'O''s into 'X''s in that surround
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摘要：Integer to Roman Given an integer, convert it to a roman numeral. The number is guaranteed to be within the range from 1 to 3999. Integer to Roman Giv
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摘要：Given a string S and a string T, count the number of distinct subsequences of T in S. A subsequence of a string is a new string which is formed from t
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摘要：Given a string source and a string target, find the minimum window in source which will contain all the characters in target. Notice If there is no su
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摘要：Given an array of strings, return all groups of strings that are anagrams. Notice All inputs will be in lower-case Given an array of strings, return a
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摘要：Given an array with n objects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red,
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摘要：Next Permutation Given a list of integers, which denote a permutation. Find the next permutation in ascending order. Notice The list may contains dupl
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摘要：Given string A representative a positive integer which has N digits, remove any k digits of the number, the remaining digits are arranged according to
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摘要：Give you an integer array (index from 0 to n-1, where n is the size of this array, value from 0 to 10000) . For each element Ai in the array, count th
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摘要：Given n non-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining.
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摘要：Given an integer array (index from 0 to n-1, where n is the size of this array), and an query list. Each query has two integers [start, end]. For each
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摘要：Insert Intervals Given a non-overlapping interval list which is sorted by start point. Insert a new interval into it, make sure the list is still in o
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摘要：Determine whether a Sudoku is valid. The Sudoku board could be partially filled, where empty cells are filled with the character .. Notice A valid Sud
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摘要：Valid Parentheses Given a string containing just the characters '(', ')', '{', '}', '[' and ']', determine if the input string is valid. Example The b
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摘要：Given a boolean 2D matrix, find the number of islands. Notice 0 is represented as the sea, 1 is represented as the island. If two 1 is adjacent, we co
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摘要：Given a string containing only digits, restore it by returning all possible valid IP address combinations. Given a string containing only digits, rest
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