Editing string

本文探讨了在编程中剪辑字符串的各种方法,并通过示例代码展示了如何使用C++进行字符串操作。从基础到进阶,涵盖了字符串的切割、拼接等关键技能。

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这几天做题碰到了好几道剪辑字符串的题目,自己写了个代码, 背过直接用。

#include<cstdio>
#include<iostream>
#include<algorithm>
#include<cstring>
using namespace std;
int main()
{
    string s;
    cin >> s;
    int n = (int)s.size();
    for(int i = 0; i < n; ++i)
    {
        for(int j = i; j < n; ++j)
        {
            for(int k = 0; k < i; ++k)
            {
                string tmp = s;
                int cnt = 0;
                for(int kk = 0; kk < k; ++kk) tmp[cnt++] = s[kk];
                for(int kk = i; kk <= j; ++kk) tmp[cnt++] = s[kk];
                for(int kk = k; kk < i; ++kk) tmp[cnt++] = s[kk];
                for(int kk = j + 1; kk < n; ++kk) tmp[cnt++] = s[kk];
                cout << tmp << endl;
            }
        }
    }
}


<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> <plist version="1.0"> <dict> <key>CFBundleDevelopmentRegion</key> <string>$(DEVELOPMENT_LANGUAGE)</string> <key>CFBundleDisplayName</key> <string>电商小白通</string> <key>CFBundleExecutable</key> <string>$(EXECUTABLE_NAME)</string> <key>CFBundleIdentifier</key> <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string> <key>CFBundleInfoDictionaryVersion</key> <string>6.0</string> <key>CFBundleName</key> <string>digital_human</string> <key>CFBundlePackageType</key> <string>APPL</string> <key>CFBundleShortVersionString</key> <string>$(FLUTTER_BUILD_NAME)</string> <key>CFBundleSignature</key> <string>????</string> <key>CFBundleVersion</key> <string>$(FLUTTER_BUILD_NUMBER)</string> <key>LSRequiresIPhoneOS</key> <true/> <key>NSCameraUsageDescription</key> <string>We need access to your camera for taking photos, recording videos, scanning QR codes, and facial recognition functions.</string> <key>NSLocationWhenInUseUsageDescription</key> <string>We need to access your location information to provide location-based services such as navigation and location related search results.</string> <key>NSMicrophoneUsageDescription</key> <string>We need to access your microphone to record audio, which may be used for voice messages or audio recording.</string> <key>NSPhotoLibraryUsageDescription</key> <string>We need to access your photo library so that you can select images from the album for editing and modification.</string> <key>UIApplicationSupportsIndirectInputEvents</key> <key>UILaunchStoryboardName</key> <string>LaunchScreen</string> <key>UIMainStoryboardFile</key> <string>Main</string> <key>UISupportedInterfaceOrientations</key> <array> <string>UIInterfaceOrientationPortrait</string> <string>UIInterfaceOrientationLandscapeLeft</string> <string>UIInterfaceOrientationLandscapeRight</string> </array> <key>UISupportedInterfaceOrientations~ipad</key> <array> <string>UIInterfaceOrientationPortrait</string> <string>UIInterfaceOrientationPortraitUpsideDown</string> <string>UIInterfaceOrientationLandscapeLeft</string> <string>UIInterfaceOrientationLandscapeRight</string> </array> <key>CADisableMinimumFrameDurationOnPhone</key> <true/> <key>UIApplicationSupportsIndirectInputEvents</key> <true/> <key>UIStatusBarHidden</key> <true/> <key>UIViewControllerBasedStatusBarAppearance</key> <false/> </dict> </plist> 这么写有什么问题
最新发布
08-10
### Minimal Bash-Like Line Editing Implementation Minimal bash-like line editing refers to the ability of command-line interfaces (CLI) to provide basic features such as cursor movement, history navigation, and simple text manipulation similar to those found in more advanced shells like `bash`. For single-user systems where resources might be limited, implementing these functionalities can significantly enhance usability without requiring extensive overhead. A straightforward approach involves using libraries that support terminal handling capabilities. One common choice is the GNU Readline library which provides powerful facilities for reading lines from an input stream while offering many useful functions including: - Command history management. - Programmable key bindings. - Completion mechanisms. - Textual search through previous commands[^1]. However, given constraints on resource usage typical in minimal environments, lighter alternatives exist. The linenoise library offers a lightweight yet effective option specifically designed for embedding into applications needing only essential line-editing functionality. Linenoise supports: - Basic arrow keys for moving around within the current line. - Simple cut/copy/paste operations via keyboard shortcuts. - Accessible API suitable for integration with various programming languages. For developers preferring even lower-level control over how each aspect works, crafting custom solutions based on direct interaction with terminals becomes viable. This method typically includes utilizing ANSI escape codes or other platform-specific APIs to manipulate console behavior directly. Here's a brief example demonstrating this concept in C++: ```cpp #include <iostream> #include <string> void moveCursorLeft() { std::cout << "\033[D"; // Move cursor one position left } int main() { std::string userInput; std::getline(std::cin, userInput); if (!userInput.empty()) { moveCursorLeft(); std::cout << "*"; } } ``` This snippet shows sending an ANSI sequence (`\033[D`) to shift the cursor back by one character when processing user inputs. Such techniques allow building up increasingly sophisticated behaviors tailored exactly according to project requirements.
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