牛客网在线判题系统使用帮助_Python_JS

r囧r小猫 2023-02-20 12:09 11阅读 0赞

牛客网在线判题系统使用帮助：[https://www.nowcoder.com/discuss/276][https_www.nowcoder.com_discuss_276]

## Python输入 ##

Python常用标准库之sys：[https://www.jianshu.com/p/c1831232c391][https_www.jianshu.com_p_c1831232c391]

### python 2+ ###

import sys
    try:
        while True:
            line = sys.stdin.readline().strip()
            if line == '':
                break
            lines = line.split()
            print int(lines[0]) + int(lines[1])
    except:
        pass

### python 3+ ###

import sys 
    for line in sys.stdin:
        a = line.split()
        if not a:
            break
        print(int(a[0]) + int(a[1]))

## JavaScript输入 ##

【node.js】readline (逐行读取)：[https://www.cnblogs.com/yujihang/p/7414169.html][https_www.cnblogs.com_yujihang_p_7414169.html]

Javascript本地测试/笔试环境搭建：[https://react.ctolib.com/wuyve-Javascript-test.html][https_react.ctolib.com_wuyve-Javascript-test.html]

### 操作步骤 ###

1.  在代码处的文件夹 输入 `cnpm install readline-sync`  
    ![生成文件][20200626171512671.png]
2.  在代码处的文件夹 添加一个JS文件，文件头部输入以下代码：
    
        var __readline = require('readline-sync');
        __readline.setDefaultOptions({ 
            prompt: ''
        });
        var read_line = __readline.prompt;
        var print = console.log;
    
    ![头部信息][20200626171544415.png]
3.  这样子，JS带输入输出就OK了

### JavaScript(V8) ###

单行输入

var __readline = require('readline-sync');
    __readline.setDefaultOptions({ 
        prompt: ''
    });
    var read_line = __readline.prompt;
    var print = console.log;
    
    //牛客网：readline
    //赛码：read_line
    while(line=read_line()){ 
        var lines = line.split(' ');
        var a = parseInt(lines[0]);
        var b = parseInt(lines[1]);
        print(a+b);
    }

多行输入

### JavaScript(Node) ###

单行输入

var readline = require('readline');
    const rl = readline.createInterface({ 
        input: process.stdin,
        output: process.stdout
    });
    rl.on('line', function (line) { 
     	// 注意：这里的line不论在shell中输入的是数字还是字符串，获取到的始终是字符串
        var tokens = line.split(' ');
        console.log(parseInt(tokens[0]) + parseInt(tokens[1]));
        // 关闭node输入环境
        rl.close();
    });

多行输入

[https_www.nowcoder.com_discuss_276]: https://www.nowcoder.com/discuss/276
[https_www.jianshu.com_p_c1831232c391]: https://www.jianshu.com/p/c1831232c391
[https_www.cnblogs.com_yujihang_p_7414169.html]: https://www.cnblogs.com/yujihang/p/7414169.html
[https_react.ctolib.com_wuyve-Javascript-test.html]: https://react.ctolib.com/wuyve-Javascript-test.html
[20200626171512671.png]: https://img-blog.csdnimg.cn/20200626171512671.png
[20200626171544415.png]: https://img-blog.csdnimg.cn/20200626171544415.png