LeetCode - 随笔分类(第10页) - immjc

[LeetCode] Ugly Number

摘要：Write a program to check whether a given number is an ugly number. Ugly numbers are positive numbers whose prime factors only include 2, 3, 5. For exa 阅读全文

posted @ 2017-08-01 19:07 immjc 阅读(112) 评论(0) 推荐(0)

[LeetCode] Poor Pigs

摘要：There are 1000 buckets, one and only one of them contains poison, the rest are filled with water. They all look the same. If a pig drinks that poison 阅读全文

posted @ 2017-08-01 18:47 immjc 阅读(134) 评论(0) 推荐(0)

[LeetCode] Number of 1 Bits

摘要：Write a function that takes an unsigned integer and returns the number of ’1' bits it has (also known as the Hamming weight). For example, the 32-bit 阅读全文

posted @ 2017-07-25 18:37 immjc 阅读(149) 评论(0) 推荐(0)

[LeetCode] Maximum Subarray

摘要：Find the contiguous subarray within an array (containing at least one number) which has the largest sum. For example, given the array [-2,1,-3,4,-1,2, 阅读全文

posted @ 2017-07-25 18:16 immjc 阅读(118) 评论(0) 推荐(0)

[LeetCode] Search Insert Position

摘要：Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in or 阅读全文

posted @ 2017-07-25 16:30 immjc 阅读(107) 评论(0) 推荐(0)

[LeetCode] Remove Duplicates from Sorted List

摘要：Given a sorted linked list, delete all duplicates such that each element appear only once. For example,Given 1->1->2, return 1->2.Given 1->1->2->3->3, 阅读全文

posted @ 2017-07-25 16:11 immjc 阅读(120) 评论(0) 推荐(0)

[LeetCode] Path Sum III

摘要：You are given a binary tree in which each node contains an integer value. Find the number of paths that sum to a given value. The path does not need t 阅读全文

posted @ 2017-07-24 22:22 immjc 阅读(139) 评论(0) 推荐(0)

[LeetCode] Not Boring Movies

摘要：X city opened a new cinema, many people would like to go to this cinema. The cinema also gives out a poster indicating the movies’ ratings and descrip 阅读全文

posted @ 2017-07-24 14:32 immjc 阅读(321) 评论(0) 推荐(0)

[LeetCode] Swap Salary

摘要：Given a table salary, such as the one below, that has m=male and f=female values. Swap all f and m values (i.e., change all f values to m and vice ver 阅读全文

posted @ 2017-07-24 14:24 immjc 阅读(241) 评论(0) 推荐(0)

[LeetCode] Big Countries

posted @ 2017-07-24 14:14 immjc 阅读(189) 评论(0) 推荐(0)

[LeetCode] Climbing Stairs

摘要：You are climbing a stair case. It takes n steps to reach to the top. Each time you can either climb 1 or 2 steps. In how many distinct ways can you cl 阅读全文

posted @ 2017-07-23 18:34 immjc 阅读(141) 评论(0) 推荐(0)

[LeetCode] Binary Tree Level Order Traversal II

摘要：Given a binary tree, return the bottom-up level order traversal of its nodes' values. (ie, from left to right, level by level from leaf to root). For 阅读全文

posted @ 2017-07-23 18:13 immjc 阅读(128) 评论(0) 推荐(0)

[LeetCode] Set Mismatch

摘要：The set S originally contains numbers from 1 to n. But unfortunately, due to the data error, one of the numbers in the set got duplicated to another n 阅读全文

posted @ 2017-07-23 17:06 immjc 阅读(162) 评论(0) 推荐(0)

[LeetCode] Power of Four

摘要：Given an integer (signed 32 bits), write a function to check whether it is a power of 4. Example:Given num = 16, return true. Given num = 5, return fa 阅读全文

posted @ 2017-07-22 22:03 immjc 阅读(166) 评论(0) 推荐(0)

[LeetCode] Power of Three

摘要：Given an integer, write a function to determine if it is a power of three. Follow up:Could you do it without using any loop / recursion? 判断一个数是否是3的幂，则阅读全文

posted @ 2017-07-22 21:53 immjc 阅读(172) 评论(0) 推荐(0)

[LeetCode] Power of Two

摘要：Given an integer, write a function to determine if it is a power of two. 判断一个整数是否是2的幂。如果一个数是2的幂，则这个数的二进制表示中，最高位是1，其他位都是0。这个数-1的二进制位全是1。所以我们可以利用这个规律对两个阅读全文

posted @ 2017-07-22 21:39 immjc 阅读(149) 评论(0) 推荐(0)

[LeetCode] Happy Number

摘要：Write an algorithm to determine if a number is "happy". A happy number is a number defined by the following process: Starting with any positive intege 阅读全文

posted @ 2017-07-21 18:16 immjc 阅读(149) 评论(0) 推荐(0)

[LeetCode] Longest Harmonious Subsequence

摘要：We define a harmonious array is an array where the difference between its maximum value and its minimum value is exactly 1. Now, given an integer arra 阅读全文

posted @ 2017-07-21 17:40 immjc 阅读(173) 评论(0) 推荐(0)

[LeetCode] Subtree of Another Tree

摘要：Given two non-empty binary trees s and t, check whether tree t has exactly the same structure and node values with a subtree of s. A subtree of s is a 阅读全文

posted @ 2017-07-21 17:19 immjc 阅读(166) 评论(0) 推荐(0)

[LeetCode] Best Time to Buy and Sell Stock

摘要：Say you have an array for which the ith element is the price of a given stock on day i. If you were only permitted to complete at most one transaction 阅读全文

posted @ 2017-07-19 18:34 immjc 阅读(130) 评论(0) 推荐(0)

immjc

Don't live up to your ambition and sorry for your sufferings.

随笔分类 - LeetCode

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