UVA_10115 - Automatic Editing之replace的用法

本文解析了一道UVA竞赛中的字符串替换题目,通过C++实现连续应用替换规则直至无法继续替换的过程。代码简洁高效,适合算法初学者及竞赛选手参考。

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先来一道UVA题目:

点击打开链接

这是一道水题,但许多人的解法却不精简。题意是:有n个替换规则,对于输入的str,不停的应用第一个替换规则,直到str中不能使用这个替换规则,以此类推。

#include <iostream>
using namespace std;
int main()
{
   int n,i;
   while(cin >> n && n)
    {
    cin.get();//读取回车
    string find[n], replace[n], text;
    for( i = 0; i < n; ++i)
    {
    getline(cin, find[i]);//相当于 cin >> find[i]
    getline(cin, replace[i]);
    }
   getline(cin, text);
   for( i = 0; i < n; ++i)
   {
 int pos;
while(pos = text.find(find[i]), pos != string::npos)
 {
   text.replace(pos, find[i].size(), replace[i]);//从 pos 位置开始的 find[i].size 个字符替换为replace[i]
 }
}
cout << text << endl;
}
return 0;
}


### Minimal Bash-like Editing Issue Solution Minimal bash-like editing refers to a lightweight text editing mode that mimics the behavior of the Bash shell's command-line editor[^2]. This mode is often implemented in applications or terminals where users can perform basic editing tasks, such as navigating through text, deleting characters, and moving the cursor. Issues related to minimal bash-like editing typically involve incorrect keybindings, unexpected behavior during navigation, or problems with history management. To address issues with minimal bash-like editing, consider the following approaches: 1. **Keybinding Configuration**: Ensure that the keybindings for navigation and editing are correctly configured. For example, in many terminal emulators, the `Ctrl + A` and `Ctrl + E` shortcuts move the cursor to the beginning and end of the line, respectively. If these shortcuts do not work as expected, check the configuration file for the application or terminal emulator being used[^3]. 2. **Input Mode Settings**: Some applications allow switching between different input modes, such as Emacs and Vi. Verify that the correct input mode is selected. For instance, in certain environments, you can toggle between modes using commands like `set -o vi` or `set -o emacs`[^4]. 3. **Terminal Compatibility**: Ensure that the terminal emulator is compatible with the application requiring bash-like editing. Incompatibilities may arise if the terminal does not support specific escape sequences or control characters required for proper editing functionality[^5]. 4. **Environment Variables**: Check environment variables such as `EDITOR` or `VISUAL` to ensure they point to the desired editor. Additionally, verify that the `TERM` variable is set correctly for your terminal type[^6]. Below is an example of configuring keybindings in a `.inputrc` file for bash-like editing: ```bash # ~/.inputrc "\e[A": history-search-backward "\e[B": history-search-forward ``` This configuration enables searching through command history using the up and down arrow keys while typing a prefix[^7].
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