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Java初学者作业——编写 Java 程序，用户输入 3 个操作数，分别求出最大值、最小值和平均值。

需求说明：编写 Java 程序，用户输入 3 个操作数，分别求出最大值、最小值和平均值。实现思路：定义 Java 类，定义 3 个方法，用来求 3 个数字的最大值、最小值和平均值。在 main 方法中使用 Scanner 完成对 3 个实例字段的赋值，再分别调用 3 个方法得到结果进行打印。实现代码...

Java初学者作业——编写JAVA程序，根据用户输入课程名称，输出对应课程的简介，各门课程的简介见表

需求说明：编写JAVA程序，根据用户输入课程名称，输出对应课程的简介，各门课程的简介见表实现思路：定义三个方法，分别用于实现输出对应课程简介的功能。main()方法主要用于控制程序执行流程，具体执行流程如下：接收用户输入课程名称。使用switch结构，根据用户输入的课程名...

Java初学者作业——编写 Java 程序，让用户输入指定数字实现产生随机数。

需求说明：编写 Java 程序，让用户输入指定数字实现产生随机数。运行效果如下：实现思路：定义两个变量start和end来保存起始和结束值。通过结束值减起始值得到变化区间再加起始值，核心代码如下：rdm.nextInt(end - start + 1) + start实现代码：imp...

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