day03

Author: TigerNiu

practice/test/.vscode/launch.json

@@ -4,6 +4,13 @@
     // 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387
     "version": "0.2.0",
     "configurations": [
+        {
+            "type": "java",
+            "name": "Launch and",
+            "request": "launch",
+            "mainClass": "day03.and",
+            "projectName": "test_a0501e95"
+        },
         {
             "type": "java",
             "name": "Launch reward",

practice/test/bin/day03/and.class

@@ -1,7 +1,44 @@
 package day03;
-import java.util.Scanner;
 public class and {
     public static void main(String[] args) {
-        System.out.print("s");
+        int sum = 0;
+        for (int i = 1; i <= 5; i++) {
+            sum += i;
+        }
+        System.out.println("1-5和为" + sum);
+        sum = 0;
+        for (int i = 1; i <= 100; i++) {
+            if (i%2 == 0) {
+                sum += i;
+            }
+        }
+        System.out.println("1-100间偶数和为" + sum);
+
+        int count = 0;
+        for (int i = 100; i <= 999; i++) {
+            int ge = i%10;
+            int shi = (i%100)/10;
+            int bai = i/100;
+            // System.out.println(ge);
+            // System.out.println(shi);
+            // System.out.println(bai);
+            Double a = Math.pow(ge, 3);
+            Double b = Math.pow(shi, 3);
+            Double c = Math.pow(bai, 3);
+            if (i == a + b + c) {
+                System.out.println(i);
+                count += 1;
+            }
+        }
+        System.out.println("水仙花数总共有" + count + "个");
+
+        double paper = 0.0001;
+        double zf = 8848.86;
+        int count1 = 0;
+        while (paper <= zf) {
+            paper *= 2;
+            count1 += 1;
+        }
+        System.out.println("需要折叠" + count1 + "次");
     }
 }