ascii

User-defined function without printf, returns hexadecimal value

由 本小妞迷上赌 提交于 2020-01-06 18:12:54
问题 char decimalToHexadecimal(long int decimalNumber) { long int quotient; long int remainder; static char hexDecNum[100]; int i=0; quotient = decimalNumber; while (quotient != 0) { remainder = quotient % 16; // to convert integer into character if (remainder < 10) { remainder = remainder + 48; } else { remainder = remainder + 55; } hexDecNum[i++] = remainder; quotient = quotient / 16; } } This user defined function will convert decimal number to hexadecimal number. I wanted to make function that

Encryption/decryption program not working properly

由 雨燕双飞 提交于 2020-01-06 05:33:25
问题 I am trying to build a program that takes the characters with ascii values from 32 to 126 and shifting them over by 9 spaces to encrypt them. Then I want to decrypt it. It successfully decrypts most of the values but the last bunch do not. Here's my code below: public static void main(String[] args) { final int SIZE = 95; // total # of ascii vals being used int[] availableChars = new int[SIZE]; int[] ePhrase = new int[SIZE]; int[] dePhrase = new int[SIZE]; for(int i = 0; i < SIZE; i++){

python uppercase and ascii in persian text

由 非 Y 不嫁゛ 提交于 2020-01-05 20:00:54
问题 I change this code to work in persian. My code returns: Key: Text is too short to analyze Text: and doesn't return key and decrypt text. Is it anything wrong with uppercase or ascii in persian text? What can I do? # -*- coding: utf-8 -*- from string import uppercase from operator import itemgetter def vigenere_decrypt(target_freqs, input): nchars = len(uppercase) ordA = ord(u"ا") sorted_targets = sorted(target_freqs) def frequency(input): result = [[c, 0.0] for c in uppercase] for c in input:

How to retrieve the unicode decimal representation of the chars in a string containing hindi text?

由 时光毁灭记忆、已成空白 提交于 2020-01-05 07:08:22
问题 I am using visual studio 2010 in c# for converting text into unicodes. Like i have a string abc= "मेरा" . there are 4 characters in this string. i need all the four unicode characters. Please help me. 回答1: When you write a code like string abc= "मेरा"; , you already have it as Unicode (specifically, UTF-16), so you don't have to convert anything. If you want to access the singular characters, you can do that using normal index: e.g. abc[1] is े (DEVANAGARI VOWEL SIGN E). If you want to see

How to retrieve the unicode decimal representation of the chars in a string containing hindi text?

由 人盡茶涼 提交于 2020-01-05 07:07:02
问题 I am using visual studio 2010 in c# for converting text into unicodes. Like i have a string abc= "मेरा" . there are 4 characters in this string. i need all the four unicode characters. Please help me. 回答1: When you write a code like string abc= "मेरा"; , you already have it as Unicode (specifically, UTF-16), so you don't have to convert anything. If you want to access the singular characters, you can do that using normal index: e.g. abc[1] is े (DEVANAGARI VOWEL SIGN E). If you want to see

三、Mysql 索引、锁

由 左心房为你撑大大i 提交于 2020-01-04 23:36:45
参考： 数据库两大神器【索引和锁】 InnoDB数据页结构 InnoDB记录存储结构 MySQL的索引 准备工作 到现在为止，MySQL对于我们来说还是一个黑盒，我们只负责使用客户端发送请求并等待服务器返回结果，表中的数据到底存到了哪里？以什么格式存放的？MySQL是以什么方式来访问的这些数据？这些问题我们统统不知道 MySQL服务器上负责对表中数据的读取和写入工作的部分是存储引擎，而服务器又支持不同类型的存储引擎，比如InnoDB、MyISAM、Memory啥的，不同的存储引擎一般是由不同的人为实现不同的特性而开发的，真实数据在不同存储引擎中存放的格式一般是不同的，甚至有的存储引擎比如Memory都不用磁盘来存储数据，也就是说关闭服务器后表中的数据就消失了。由于InnoDB是MySQL默认的存储引擎，也是我们最常用到的存储引擎。 InnoDB页简介 InnoDB是一个 将表中的数据存储到磁盘上的存储引擎 ，所以即使关机后重启我们的数据还是存在的。而真正处理数据的过程是发生在内存中的，所以需要把磁盘中的数据加载到内存中，如果是处理写入或修改请求的话，还需要把内存中的内容刷新到磁盘上。而我们知道读写磁盘的速度非常慢，和内存读写差了几个数量级，所以当我们想从表中获取某些记录时，InnoDB存储引擎需要一条一条的把记录从磁盘上读出来么？不，那样会慢死，InnoDB采取的方式是：

binary input with an ASCII text header, read from stdin

由 十年热恋 提交于 2020-01-04 17:51:11
问题 I want to read a binary PNM image file from stdin. The file contains a header which is encoded as ASCII text, and a payload which is binary. As a simplified example of reading the header, I have created the following snippet: #! /usr/bin/env python3 import sys header = sys.stdin.readline() print("header=["+header.strip()+"]") I run it as "test.py" (from a Bash shell), and it works fine in this case: $ printf "P5 1 1 255\n\x41" |./test.py header=[P5 1 1 255] However, a small change in the

Python concatenating strings - UnicodeDecodeError: 'ascii' codec can't decode byte

由 对着背影说爱祢 提交于 2020-01-04 05:39:11
问题 I want to concatenate two strings like this: requestData = command + ' ' + data "data" in my case holds binary data, that should not be opened - it should just glue it to command. But imho python is attempting to open it and it fails with: UnicodeDecodeError: 'ascii' codec can't decode byte 0xbc in position 1: ordinal not in range(128) Is there a way to glue it without opening? Edit: Python 2.7 Also my data is actualy not utf-8 decode might not help - its binary data. 回答1: Try using http:/

TradeMark(TM) sign appears as a question mark on device

由 余生长醉 提交于 2020-01-04 04:28:07
问题 I'm displaying the trademark sign(™) appended to a text as a title of dialog box. It is working fine in emulator. But when I'm running the same in device then it displays as a question mark(?). Any ideas why it is happening and how to avoid that? 回答1: EDITED You can do this: <string name="trademark_symbol">™</string> <string name="app_name">My Application ™</string> Try this in your layout editor and you will see the symbol. 来源： https://stackoverflow.com/questions/14211783/trademarktm-sign

print a filled square in console

由 荒凉一梦 提交于 2020-01-04 02:53:20
问题 I need to print a filled square in Linux terminal using my C++ program (1cm x 1cm size). I tried to use ASCII 254 (■), but in terminal it print as garbage character. I'm not sure how to print extended ASCII character using c++. Here are two methods I have tried to print extended ASCII. but not succeed. First method for(int i=128; i< 255; i++ ) { std::cout << static_cast<char>(i) << std::endl; } Second method unsigned char temp = 'A' for(int i=65; i< 255; i++ ) { std::cout << temp++ << std:
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