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牛客网本地刷题环境部署

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本文字数： 2.4k 阅读时长 ≈ 2 分钟

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

JavaScript输入

【node.js】readline (逐行读取)：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

操作步骤

  1. 在代码处的文件夹 输入 cnpm install readline-sync

  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：

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    var __readline = require('readline-sync');
    __readline.setDefaultOptions({
        prompt: ''
    });
    var read_line = __readline.prompt;
    var print = console.log;

  3. 这样子，JS带输入输出就OK了

JavaScript(V8)

单行输入

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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

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var __readline = require('readline-sync');
__readline.setDefaultOptions({
    prompt: ''
});
var read_line = __readline.prompt;
var print = console.log;

var countLine = parseInt(read_line());
var sum = 0;
for (var i = 0; i < countLine; i++) {
    lines = read_line().split(" ")
    for (var j = 0; j < lines.length; j++) {
        sum += parseInt(lines[j]);
    }
    print(sum);
}

JavaScript(Node)

单行输入

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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

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var print = console.log;
var readline = require('readline');
const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
});

var countLine = 3;
var index = 0;
var sum = 0;
rl.on('line', function (line) {
    var lines = line.split(' ');
    for (var i = 0; i < lines.length; i++) {
        sum += parseInt(lines[i]);
    }
    index++;
    if (index == countLine) {
        print(sum);
        // 关闭node输入环境
        rl.close();
    }
});
rl.on('close', function () {
    process.exit(0);
})

Python输入

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

python 2+

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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+

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