package demo; import java.util.*; //正数的随机取值 class number1{ private int i; private int j; public void seti() { i = 1 + (int)(Math.random() * 100); } public int geti() { return i; } public void setj() { j = 1 + (int)(Math.random() * 99); } public int getj() { return j; } } //负数的随机取值 class Number{ private int i; private int j; public void seti() { i = (-1) + (int)(Math.random() * (-100)); } public int geti() { return i; } public void setj() { j = (-1) + (int)(Math.random() * (-99)); } public int getj() { return j; } } //运算符号的随机取值 class symbol{ private int a; public void seta() { a = 1 + (int)(Math.random() * 4); } public int geta() { return a; } } //分数的随机取值 class number2{ private int i; private int j; private int x; private int y; public void setnumber() { i = 1 + (int)(Math.random() * 100); j = 1 + (int)(Math.random() * 99); x = 1 + (int)(Math.random() * 100); y = 1 + (int)(Math.random() * 99); } public int getnumberi() { return i; } public int getnumberj() { return j; } public int getnumberx() { return x; } public int getnumbery() { return y; } } public class calculate { public static void main(String args[]) { menu(); System.out.println("请输入想要运行的计算"); Scanner scan = new Scanner(System.in); int p; p = scan.nextInt(); if(p == 1) { for(int i = 0 ; i <= 29 ; i ++){ number1 n1 = new number1(); int a1 , a2; n1.seti(); a1 = n1.geti(); n1.setj(); a2 = n1.getj(); symbol s = new symbol(); int b; s.seta(); b = s.geta(); if(b == 1) System.out.println(a1 + "+" + a2 + "=" + ( a1 + a2 ) ); if(b == 2) System.out.println(a1 + "-" + a2 + "=" + (a1 - a2)); if(b == 3) System.out.println(a1 + "*" + a2 + "=" + (a1 * a2)); if(b == 4){ int c = a1 % a2; int c1 = (a1 - c) / a2; System.out.println(a1 + "/" + a2 + "=" + c1 + "余" + c); } } } if(p == 2){ for(int i = 0 ; i <= 29 ; i ++){ Number n1 = new Number(); int a1 , a2; n1.seti(); a1 = n1.geti(); n1.setj(); a2 = n1.getj(); symbol s = new symbol(); int b; s.seta(); b = s.geta(); if(b == 1) System.out.println(a1 + "+" + "(" +a2 + ")" + "=" + ( a1 + a2 ) ); if(b == 2) System.out.println(a1 + "-" + "(" +a2 + ")" + "=" + (a1 - a2)); if(b == 3) System.out.println(a1 + "*" + "(" +a2 + ")" + "=" + (a1 * a2)); if(b == 4){ int c = ((-1) * a1) % ((-1) * a2); int c1 = ((-1) * a1 - c) / ((-1) * a2); System.out.println(a1 + "/" + "(" +a2 + ")" + "=" + c1 + "余" + c); } } } if(p == 3) { for(int i = 0 ; i <= 29 ; i++) { number2 n2 = new number2(); int b1 , b2 , b3 , b4; n2.setnumber(); b1 = n2.getnumberi(); b2 = n2.getnumberj(); b3 = n2.getnumberx(); b4 = n2.getnumbery(); symbol s1 = new symbol(); int c; s1.seta(); c = s1.geta(); if(c == 1) System.out.println(simplify(b2 , b1) + "+" + simplify(b4 , b3) + "=" + simplify(b2 * b3 + b4 * b1 , b1 * b3)); if(c == 2) System.out.println(simplify(b2 , b1) + "-" + simplify(b4 , b3) + "=" + simplify(b2 * b3 - b4 * b1 , b1 * b3)); if(c == 3) System.out.println(simplify(b2 , b1) + "*" + simplify(b4 , b3) + "=" + simplify(b2 * b4 , b1 * b3)); if(c == 4) System.out.println(simplify(b2 , b1) + "/" + simplify(b4 , b3) + "=" + simplify(b2 * b3 , b1 * b4)); } } if(p == 4) { int i = 0; while(i < 30){ number1 n = new number1(); int a1 , a2; n.seti(); a1 = n.geti(); n.setj(); a2 = n.getj(); if(a1 % a2 == 0) { i++; System.out.println(a1 + "/" + a2 + "=" + (a1 / a2)); } } } if(p == 5) { int i = 0; while(i < 30){ number1 n = new number1(); int a1 , a2; n.seti(); a1 = n.geti(); n.setj(); a2 = n.getj(); if(a1 % a2 != 0) { i++; int c = a1 % a2; int c1 = (a1 - c) / a2; System.out.println(a1 + "/" + a2 + "=" + c1 + "余" + c); } } } if(p == 6) { System.out.println("请输入范围的左边界:"); Scanner scan1 = new Scanner(System.in); int a3; a3 = scan1.nextInt(); System.out.println("请输入范围的右边界:"); Scanner scan2 = new Scanner(System.in); int a4; a4 = scan1.nextInt(); int i = 0; while(i < 30){ number1 n1 = new number1(); int a1 , a2; n1.seti(); a1 = n1.geti(); n1.setj(); a2 = n1.getj(); symbol s = new symbol(); int b; s.seta(); b = s.geta(); if(a1 >= a3 && a1 <= a4 && a2 >= a3 && a2 <= a4) { i++; if(b == 1) System.out.println(a1 + "+" + a2 + "=" + ( a1 + a2 ) ); if(b == 2) System.out.println(a1 + "-" + a2 + "=" + (a1 - a2)); if(b == 3) System.out.println(a1 + "*" + a2 + "=" + (a1 * a2)); if(b == 4){ int c = a1 % a2; int c1 = (a1 - c) / a2; System.out.println(a1 + "/" + a2 + "=" + c1 + "余" + c); } } } } if(p == 7) { } } public static String simplify(int a,int b) //获得最简分数 { int max = 0; for(int i = 0 ;i < 100 ;i ++) { int n = i + 1 ; if(a % n == 0 && b % n == 0) max = n; } return (String)( a / max + "/" + b / max); } public static void menu() { System.out.println("1. 正数的四则运算"); System.out.println("2. 负数的四则运算"); System.out.println("3. 分数的四则运算"); System.out.println("4. 整除运算"); System.out.println("5. 非整除运算"); System.out.println("6. 规定数值范围的运算"); } }
程序截图：
一周项目总结
时间记录日志
缺陷日志
总结： 刚开始觉得写好代码就可以了，这些总结和分析没什么用，但是随着老师的讲解~ 代码写半天，总结一天半~ 我渐渐认识到这些的重要性，写好任务分析，这要程序写一半也可以交手给别人，对事后的维护也很重要，这是对别人的负责，也是一个程序员该有的责任。 表格什么的刚开始觉得是很麻烦呢，但是养成习惯之后就好， 慢慢的就能估计任务所需时间，提高自己的速度，毕竟效率为王。这周组队了，以后的任务我们就是一个TAEM，我会做好自己该做的任务，培养团队精神。