[第二轮] 3/25-3/31 CareerCup 5.8

A monochrome screen is stored as a single array of bytes, allowing eight consecutive pixels to be stored in one byte. The screen has width w, where w is divisible "by 8 (that is, no byte will be split across rows). The height of the screen, of course," can be derived from the length of the array and the width. Implement a function drawHorizontalLine(byte[] screen, int width, int x1, int x2, int y) which draws a horizontal line from (x1,y) to (x2,y).

感谢SunnyDay1022纠正~

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http://www.1point3acres.com/bbs/thread-48094-1-1.html
http://www.1point3acres.com/bbs/thread-32423-1-1.html

The screen has width w, where w is divisible can be derived from the length of the array and the width. 这句话什么意思呢？ 咋感觉不通呢中间

题目中少了一句话
A monochrome screen is stored as a single array of bytes, allowing eight consecutive pixels to be stored in one byte. The screen has width w, where w is divisible "by 8 (that is, no byte will be split across rows). The height of the screen, of course," can be derived from the length of the array and the width. Implement a function drawHorizontalLine(byte[] screen, int width, int x1, int x2, int y) which draws a horizontal line from (x1,y) to (x2,y).
https://github.com/swang1022/career_cup/blob/master/career_cup_5.8/drawHorizontalLine.cpp

https://github.com/1094401996/Ca ... edot8/DrawLine.java

*  method: 自己题目理解错误。。。看答案的， 自己智力已经无解了。。。

SunnyDay1022 发表于 2013-3-29 03:16
题目中少了一句话
A monochrome screen is stored as a single array of bytes, allowing eight consecuti ...

不好意思少打了。。

规格严格理性帝 发表于 2013-4-2 08:02
https://github.com/1094401996/CareerCup/blob/master/Chapter05/src/fivedot8/DrawLine.java

*  meth ...

Hi, 题目什么意思呢？

astkaasa 发表于 2013-4-16 10:33
https://gist.github.com/astkaasa/5392911

这个代码有点问题。
1. 应该是y*width/8而不是y*width
2. 两点在同一byte的时候单纯地左移右移是有问题的。应该是需要分是否在同一byte讨论的。

astkaasa 发表于 2013-4-29 21:47
多谢指正，已修改

不谢不谢~共同进步~