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RSS订阅原创 java学习p261
public class Test { public static void main(String[] args) { Circle circle = new Circle(0); PassObject passObject = new PassObject(); passObject.printAreas(circle, 5); }}class Circle { double radius; public Circle
2021-12-10 15:44:31
235
原创 java学习p268
public class ArrayTest { public static void main(String[] args) { MyTools mt = new MyTools(); int[] arr = {10, -1, 8, 0, 34}; mt.bubble(arr); for (int i = 0; i < arr.length; i++) { System.out.print(arr[i]
2021-11-30 13:15:52
426
原创 java学习p236
public class a1 { public static void main(String[] args) { Method m = new Method(); System.out.println(m.showScore("Jack", 12, 14, 18)); }}class Method { public String showScore(String name, double... score) { double s
2021-11-17 11:31:49
341
原创 java学习p226
public class a1 { public static void main(String[] args) { Tower tower = new Tower(); tower.move(3, 'a', 'b', 'c'); }}class Tower { public void move(int num, char a, char b, char c) { if (num == 1) { Syste
2021-11-10 10:52:30
375
原创 java学习p222
public class a1 { public static void main(String[] args) { int[][] map = new int[8][7]; for (int i = 0; i < map[i].length; i++) { map[0][i] = 1; map[7][i] = 1; } for (int i = 0; i < map.leng
2021-11-04 14:22:42
70
原创 java学习p221
public class a1 { public static void main(String[] args) { Tool t1 = new Tool(); int day = 1; int peachNum = t1.peach(day); if (peachNum == -1) { System.out.println("天数不正确"); } else {
2021-11-04 00:22:18
73
原创 java学习p220
import java.util.Scanner;public class a1 { public static void main(String[] args) { Scanner myScanner = new Scanner(System.in); System.out.println("请输入斐波那契数列的项数"); int n = myScanner.nextInt(); tools t1 = new tools();
2021-11-03 21:11:45
90
原创 java学习p188
import java.util.Scanner;public class a1 { public static void main(String[] args) { Scanner myScanner = new Scanner(System.in); System.out.println("请输入数组的元素个数"); int length = myScanner.nextInt(); int[] arr = new int[len
2021-10-28 19:37:16
71
原创 java学习p187
public class a1 { public static void main(String[] args) { int[] arr = {10, 12, 45, 90};//升序数组 int insertNum = 23; int index = - 1; for (int i = 0; i < arr.length; i++) {//确定插入位置 if (insertNum <= arr[i]
2021-10-28 15:13:22
74
原创 java学习p182
import java.util.Scanner;public class a1 { public static void main(String[] args) { Scanner myScanner = new Scanner(System.in); int length; do { System.out.println("请输入杨辉三角的层数(<= 16)"); length = mySca
2021-10-27 16:11:19
90
原创 java学习p181
public class a1 { public static void main(String[] args) { int[][] arr = {{4, 6}, {1, 4, 5, 7}, {-2}}; int sum = 0; System.out.println("=====遍历该数组====="); for (int i = 0; i < arr.length; i++) { for (int j
2021-10-26 22:22:09
69
原创 java学习p179
import java.util.Scanner;public class a1 { public static void main(String[] args) { Scanner myScanner = new Scanner(System.in); int length; do { System.out.println("请输入二维数组的元素个数"); length = myScanner.nex
2021-10-26 21:17:39
74
原创 java学习p174
import java.util.Scanner;public class a1 { public static void main(String[] args) { Scanner myScanner = new Scanner(System.in); System.out.println("请输入数组的长度"); int length = myScanner.nextInt(); int[] arr = new int[lengt
2021-10-25 17:41:00
85
原创 java学习p170,p171缝合版
import java.util.Scanner;public class a1 { public static void main(String[] args) { Scanner myScanner = new Scanner(System.in); System.out.println("请输入数组长度"); int length = myScanner.nextInt(); int[] arr = new int[length
2021-10-24 20:06:36
77
原创 java学习p171
import java.util.Scanner;public class a1 { public static void main(String[] args) { int[] arr = {1, 2, 3, 4, 5}; System.out.print("此时数组为 "); for (int i = 0; i < arr.length; i++) { System.out.print(arr[i] + " ");
2021-10-24 18:48:03
1563
原创 java学习p170
import java.util.Scanner;public class a1 { public static void main(String[] args) { Scanner myScanner = new Scanner(System.in); int[] arr = {}; char choose; label1: do { int[] arrNew = new int[
2021-10-24 16:17:01
87
原创 java学习p168
import java.util.Scanner;public class a1 { public static void main(String[] args) { Scanner myScanner = new Scanner(System.in); System.out.println("请输入数组的长度"); int length = myScanner.nextInt(); int[] arr1 = new int[
2021-10-24 11:55:29
1317
原创 java学习p167
import java.util.Scanner;public class a1 { public static void main(String[] args) { Scanner myScanner = new Scanner(System.in); System.out.println("请输入数组的长度"); int length = myScanner.nextInt(); int[] arr = new int[l
2021-10-24 11:13:13
73
原创 java学习p163
import java.util.Scanner;public class a1 { public static void main(String[] args) { Scanner myScanner = new Scanner(System.in); System.out.println("请输入数组的长度"); int a = myScanner.nextInt(); int[] arr = new int[a];
2021-10-23 22:31:57
97
原创 java学习p162
public class a1 { public static void main(String[] args) { System.out.print("方法一的结果为 "); char[] arr1 = new char[26]; char a = 'A'; for (int i = 0;i < 26;i++) { arr1[i] = a; a++; Sys
2021-10-23 21:36:10
88
原创 java学习p136
public class a1 { public static void main(String[] args) { for (int i = 1;i <= 9;i++) { for (int j = 1; j <= i; j++) { System.out.print(j + " * " + i + " = " + j * i + "\t"); } System.ou
2021-10-23 16:24:38
36
原创 java学习p153
public class a1 { public static void main(String[] args) { int sum1 = 0; int total1 = 0; for (int i = 1;i <= 100;i++) { sum1 += i; total1 += sum1; } System.out.println("方法1结果为 " + total
2021-10-23 13:35:26
41
原创 java学习p152
public class a1 { public static void main(String[] args) { double sum = 0; for (double n = 1;n <= 100;n++) { if (n % 2 != 0) { sum += 1 / n; } else { sum -= 1 / n;
2021-10-23 11:54:20
39
原创 java学习p151
public class a1 { public static void main(String[] args) { for (char ch1 = 97;ch1 <= 122;ch1++) { System.out.print(ch1 + "\t"); } System.out.println(); for (char ch1 = 90;ch1 >= 65;ch1--) {
2021-10-23 11:24:54
51
原创 java学习p150
public class a1 { public static void main(String[] args) { int count = 0; for (int i = 1;i <= 100;i++) { if (i % 5 != 0) { System.out.print(i + "\t"); count++; while (count
2021-10-23 11:00:55
75
原创 java学习p149
//水仙花数import java.util.Scanner;public class a1 { public static void main(String[] args) { for (int i = 100;i < 1000;i++) { int n1 = i % 10; int n2 = i / 10 % 10; int n3 = i / 100; int n4 = n1
2021-10-23 10:34:23
43
原创 java学习p148
import java.util.Scanner;public class a1 { public static void main(String[] args) { int money = 100000; int count = 0; while (money > 50000) { money = money - (int)(money * 0.05); count++; }
2021-10-22 22:32:10
49
原创 java学习p143
import java.util.Scanner;public class a1 { public static void main(String[] args) { Scanner myScanner = new Scanner(System.in); String name = ""; String password = ""; int s = 3; for (int i = 1;i <= 3;i++) {
2021-10-22 21:04:23
37
原创 java学习p137
import java.util.Scanner;public class a1 { public static void main(String[] args) { Scanner myScanner = new Scanner(System.in); System.out.print("请输入层数："); int totalLevel = myScanner.nextInt(); for (int i = 1;i <= to
2021-10-21 13:13:53
49
原创 java学习p135
import java.util.Scanner;public class a1 { public static void main(String[] args) { Scanner myScanner = new Scanner(System.in); double total = 0; int passNum = 0; for (int j = 1;j <= 3;j++) { double sum =
2021-10-20 22:24:54
54
原创 java学习p126
java学习p126import java.util.Scanner;public class a1 { public static void main(String[] args) { Scanner myScanner = new Scanner(System.in); System.out.println("请输入值"); int t = myScanner.nextInt(); int a = 0 , b = t;
2021-10-20 15:08:30
42
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