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[LeetCode&Python] Problem 693. Binary Number with Alternating Bits

摘要： Given a positive integer, check whether it has alternating bits: namely, if two adjacent bits will always have different values. Example 1: Input: 5 O 阅读全文

posted @ 2018-10-20 11:21 chiyeung 阅读(177) 评论(0) 推荐(0)

[LeetCode&Python] Problem 637. Average of Levels in Binary Tree

摘要： Given a non-empty binary tree, return the average value of the nodes on each level in the form of an array. Example 1: Note: 阅读全文

posted @ 2018-10-19 09:51 chiyeung 阅读(174) 评论(0) 推荐(0)

[LeetCode&Python] Problem 496. Next Greater Element I

摘要： You are given two arrays (without duplicates) nums1 and nums2 where nums1’s elements are subset of nums2. Find all the next greater numbers for nums1' 阅读全文

posted @ 2018-10-19 09:20 chiyeung 阅读(315) 评论(0) 推荐(0)

[LeetCode&Python] Problem 104. Maximum Depth of Binary Tree

摘要： Given a binary tree, find its maximum depth. The maximum depth is the number of nodes along the longest path from the root node down to the farthest l 阅读全文

posted @ 2018-10-18 11:55 chiyeung 阅读(101) 评论(0) 推荐(0)

[LeetCode&Python] Problem 136. Single Number

摘要： Given a non-empty array of integers, every element appears twice except for one. Find that single one. Note: Your algorithm should have a linear runti 阅读全文

posted @ 2018-10-18 11:40 chiyeung 阅读(117) 评论(0) 推荐(0)

[LeetCode&Python] Problem 897. Increasing Order Search Tree

摘要： Given a tree, rearrange the tree in in-order so that the leftmost node in the tree is now the root of the tree, and every node has no left child and o 阅读全文

posted @ 2018-10-14 10:42 chiyeung 阅读(248) 评论(0) 推荐(0)

[LeetCode&Python] Problem 566. Reshape the Matrix

摘要： In MATLAB, there is a very useful function called 'reshape', which can reshape a matrix into a new one with different size but keep its original data. 阅读全文

posted @ 2018-10-13 10:12 chiyeung 阅读(198) 评论(0) 推荐(0)

[LeetCode&Python] Problem 412. Fizz Buzz

摘要： Write a program that outputs the string representation of numbers from 1 to n. But for multiples of three it should output “Fizz” instead of the numbe 阅读全文

posted @ 2018-10-13 09:06 chiyeung 阅读(200) 评论(0) 推荐(0)

[LeetCode&Python] Problem 575. Distribute Candies

摘要： Given an integer array with even length, where different numbers in this array represent different kinds of candies. Each number means one candy of th 阅读全文

posted @ 2018-10-12 13:40 chiyeung 阅读(162) 评论(0) 推荐(0)

[LeetCode&Python] Problem 669. Trim a Binary Search Tree

摘要： Given a binary search tree and the lowest and highest boundaries as L and R, trim the tree so that all its elements lies in [L, R] (R >= L). You might 阅读全文

posted @ 2018-10-12 13:28 chiyeung 阅读(139) 评论(0) 推荐(0)

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