方法一
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
while (scanner.hasNext()) {
String str=scanner.nextLine();
char[] a=str.toCharArray();
for(int i=0;i<a.length;i++){
if(a[i]>='A' && a[i]<='Z'){
a[i] += 32;
}
System.out.print(a[i]);
}
}
}
}
方法二
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
while (scanner.hasNext()) {
String str=scanner.nextLine();
String b=str.toLowerCase(); //所有大写字母转换为小写字母
System.out.print(b);
}
}
}
方法三
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
while (scanner.hasNext()) {
A(scanner.nextLine());
}
}
public static void A(String a){
char[] b=a.toCharArray();
for(int i=0;i<b.length;i++){
if(b[i]>='A'&&b[i]<='Z'){
b[i] += 32;
}
System.out.print(b[i]);
}
}
}