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  • 四则运算

    public class sizeyunsuan {     public static void main(String[] args) {                 Random random = new Random();                 for (int j = 1; j <= 300; j++) {                     int algorithm = random.nextInt(4);                     int num1 = random.nextInt(100);                     int num2 = random.nextInt(100);
    switch (algorithm) { case 0:
                     System.out.println("第" + j + "个:");
    System.out.println(num1 + "*" + num2 + "=" ); break; case 1:
                     System.out.println("第" + j + "个:");
    System.out.println(num1 + "+" + num2 + "=" ); break; case 2:
                     System.out.println("第" + j + "个:");
    System.out.println(num1 + "-" + num2 + "=" ); break; case 3:
    if (num2 == 0) {
    j--; break; } else {
                        System.out.println("第" + j + "个:");
    System.out.println(num1 + "/" + num2 + "=");
    } break; default: break; } } }
    }
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  • 原文地址:https://www.cnblogs.com/xuzhinan/p/6518133.html
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