Contains Duplicate I II III of Leetcode

217. Contains Duplicate Given an array of integers, find if the array contains any duplicates. Your function should return true if any value appears at least twice in the array, and it should return false if every element is distinct. Use a hash table to traverse the entire array, return false if the hash table ex ...

Posted on Sun, 23 Dec 2018 17:48:06 -0800 by SuperTini

leetcode problem - 73. Set Matrix Zeroes && 74. Search a 2D Matrix

73, title: Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place. click to show follow up. Follow up: Did you use extra space? A straight forward solution using O(mn) space is probably a bad idea. A simple improvement uses O(m + n) space, but still not the best solution. Could you devise a constant s ...

Posted on Sun, 23 Dec 2018 16:06:05 -0800 by paradigmapc

Comparative Selection of CSS Preprocessors (Sass&Less&Stylus)

CSS preprocessor defines a new language. Its basic idea is to use a special programming language to add some programming features to CSS. CSS is used as the target to generate files. Then developers only need to use this language to code. Generally speaking, the CSS preprocessor uses a special programming language to style Web pages, and then ...

Posted on Sun, 23 Dec 2018 09:18:06 -0800 by nosheep

Reading Notes in iOS Drawing Practical UIKit Solutions (4) - Masks, Blurs and Animations

Masks, blurs and animations will add a lot to our APP. Now let's get to know it. Drawing Images with Blocks Using the following tool functions, you can simplify the process of creating an image. typedef void(^DrawingStateBlock)(); UIImage * DrawIntoImage(CGSize size, DrawingStateBlock block) { UIGraphicsBegin ...

Posted on Sun, 23 Dec 2018 01:18:06 -0800 by vbzoom.com

MDM9x25 Flashless boot(Power Manager)

Setting device tree and related platform initialization functions, mainly setting HOST_WAKE, DEVICE_RDY, HOST_RDY three GPIO and settings The interrupt functions of HOST_WAKE and DEVICE_RDY. The notifier call function related to power manager of PM and HSIC is set. mdmpm_pdata { compatible = "qcom,mdm-hsic-pm"; q ...

Posted on Sat, 22 Dec 2018 03:39:05 -0800 by nelietis

[Dead Java Concurrency] - - - ThreadPool Executor of J.U.C

html http://cmsblogs.com/ 『chenssy』 As the core class in the Executor framework, ThreadPool Executor represents the well-known thread pool, which gives us enough reason to figure it out. Next, we will work out it step by step through the source code. Internal state Threads have five states: new, ready, running, blocking, dead, and ...

Posted on Sat, 22 Dec 2018 03:03:06 -0800 by JMair

Number type, String type, Global object, Math object summary in JavaScript

http://blog.csdn.net/bboyjoe/article/details/51532319 Number type valueOf(): Returns the value of the basic type represented by the object. toString(): Passes a parameter representing the cardinality, telling it to return the string form of a numeric number of decimal digits. var num=10;   console.log(num.toString());/ ...

Posted on Sat, 22 Dec 2018 02:00:06 -0800 by Unseeeen

Exercise Question 1: C Primer Plus Chapter 6 C Control Statement: C Cycle - Reference Answer to Programming Exercise Question

1. Write a program that creates an array of 26 elements and stores 26 lowercase letters in it. Then print all the contents of the array. #include<stdio.h> int main() { char alphabet[26]; int i = 0; char ch; ch = 'a'; for(; i < 26; i++) { alphabet[i] = ch; ch++; } printf(" ...

Posted on Sat, 22 Dec 2018 01:18:06 -0800 by lyasian

android DOM, SAX, PULL parsing XML -- Exercise

SAX and PULL are recommended. The characteristics of SAX parsing: This parsing method is fast and takes up less memory, but it requires the application to process the parser's state by itself, which is more cumbersome to implement. Moreover, it only supports the reading of XML files and does not support writing. SAX parsers wor ...

Posted on Sat, 22 Dec 2018 00:21:06 -0800 by kendall

1043. Is It a Binary Search Tree (25) - JAVA implementation

Title Link Main idea of the title: Define the search binary tree and the mirror search binary tree (that is, the left child of each node of the binary search tree is older than himself, the right child is smaller than himself, and both left and right children meet the definition of the tree) [The same value is placed in the right subtree]. ...

Posted on Fri, 21 Dec 2018 19:36:05 -0800 by alex57