原创 #51 Previous Permutation
題目描述： Given a list of integers, which denote a permutation. Find the previous permutation in ascending order. Not
2020-02-21 07:31:16
原创 ＃1 A + B Problem
題目描述： Write a function that add two numbers A and B. You should not use + or any arithmetic operators. Notice
2018-09-03 14:45:16
原创 ＃12 Min Stack
題目描述： Implement a stack with min() function, which will return the smallest number in the stack. It should support p
2018-09-03 14:45:16
原创 #30 Insert Interval
題目描述： Given a non-overlapping interval list which is sorted by start point. Insert a new interval into it, make sure
2018-09-03 14:45:16
原创 ＃6 Merge Two Sorted Arrays
題目描述： Merge two given sorted integer array A and B into a new sorted integer array. Have you met this question in
2018-09-03 14:45:16
原创 #5 Kth Largest Element
題目描述： Find K-th largest element in an array. Notice You can swap elements in the array Have you met this que
2018-09-03 14:45:16
原创 ＃3 Digit Counts
題目描述： Count the number of k's between 0 and n. k can be 0 - 9. Have you met this question in a real interview? Y
2018-09-03 14:45:16
原创 #40 Implement Queue by Two Stacks
題目描述： As the title described, you should only use two stacks to implement a queue's actions. The queue should suppor
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原创 #32 Minimum Window Substring
題目描述： Given a string source and a string target, find the minimum window in source which will contain all the charac
2018-09-03 14:45:16
原创 #29 Interleaving String
題目描述： Given three strings: s1, s2, s3, determine whether s3 is formed by the interleaving of s1 and s2. Have you m
2018-09-03 14:45:16
原创 #42 Maximum Subarray II
題目描述： Given an array of integers, find two non-overlapping subarrays which have the largest sum. The number in each
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原创 #34 N-Queens II
題目描述： Follow up for N-Queens problem. Now, instead outputting board configurations, return the total number of disti
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原创 #15 Permutations
題目描述： Given a list of numbers, return all possible permutations. Notice You can assume that there is no duplicat
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原创 #39 Recover Rotated Sorted Array
題目描述： Given a rotated sorted array, recover it to sorted array in-place. Have you met this question in a real inte
2018-09-03 14:45:16
原创 #33 N-Queens
題目描述： The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens attack ea
2018-09-03 14:45:16