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题解 | #邮箱验证#

Matcher和Pattern的应用（要import引入） import java.util.Scanner; import java.util.regex.Pattern; import java.util.regex.Matcher; public class Main { publi...

Java Matcher Pattern

2022-05-05

6 445

题解 | #输出某一年的各个月份的天数#

LocalDate 的使用 import java.util.Calendar; import java.util.Scanner; import java.time.LocalDate; public class Main { public static void main(String...

Java LocalDate

2021-10-30

1 674

题解 | #记录点赞用户#

import java.util.*; public class Main { public static void main(String[] args) { LikeRecorder recorder = new LikeRecorderImpl(); ...

Java Set

2021-10-16

1 563

题解 | #回文数判断#

import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner console = new Scanner(System.in); ...

Java

2021-10-16

0 626

题解 | #判断各类型字符个数#

方法一： import java.util.Scanner; public class Main { public static void main(String[] args) { int numbers = 0; int words = 0; ...

Java

2021-10-16

25 871

题解 | #根据周长求面积#

import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); ...

Java

2021-10-16

0 503

题解 | #判断素数个数#

不包含2的素数个数： import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in...

Java 不含2的素数

2021-10-15

1 632

题解 | #冒泡排序#

冒泡排序 boolean flag; for(int i=0; i<arr.length-1; i++){ flag = true; for(int j=0; j<arr.length-i-1; j++){ if(arr[j] > arr[j+1]){ ...

Java

2021-10-15

0 487

题解 | #统计字符串中字母出现次数#

方法一： import java.util.Scanner; public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); ...

Java StringBuilder

2021-10-15

0 538

题解 | #统计字符串中字母出现次数#

replace yyds import java.util.Scanner; public class Main { public static void main(String[] args) { String string = "H e l l o ! n o w c ...

Java

2021-10-15

155 2240