以小写形式打印输入字符串的第二个单词的程序 [英] Program to print the second word of the input string in lower case
问题描述
问题是我正在使用< string> .length();函数来查找字符串的长度。但是,该功能仅将字符计数到空格键。我需要它来计算它直到字符串的结尾。我该怎么办?
我的尝试:
/ / program用小写打印输入字符串的第二个单词
包混合;
import java.util.Scanner;
公共类Mixed7 {
public static void main(String [] args){
Scanner user_input = new Scanner(System.in);
String str = user_input.next(); //字符串初始化
char [] str_c; //字符数组(我们将< str>字符串转换为此数组)
str_c = new char [40]; //我不认为我必须解释这个
int i = 0; //用于循环的整数
//System.out.println(str.length()); //用它来查找字符串的长度
for(i = 1; i< str.length(); i ++){
str_c [i] = str.charAt(i); //使用.charAt()函数将字符串中的字符发送到字符数组
}
int second_word = 0;
for(i = 0; i< str.length(); i ++)//
if(str_c [i] == '')//使用这个我找到空格的字符,下一个字符将是数组的第二个字
second_word = i ++; //
String str2;
str2 = str.substring(second_word).toLowerCase(); //我将字符串的第二个字输入str2变量
System.out.println(str2); //我打印第二个单词
}
}
The problem is that i am using the <string>.length(); function to find the length of the string. However the function only counts the character upto the space bar. I need it to count it till the end of the string. What should I do?
What I have tried:
//program to print the second word of the input string in lower case
package mixed;
import java.util.Scanner;
public class Mixed7 {
public static void main(String[] args){
Scanner user_input=new Scanner(System.in);
String str=user_input.next(); //string initialization
char[] str_c; //character array (we will convert the <str>string to this array)
str_c=new char[40]; //i dont think i have to explain this
int i=0; //integer for for looping
//System.out.println(str.length()); //used this to find the length of string
for(i=1;i<str.length();i++){
str_c[i]=str.charAt(i); //using the .charAt() function to send the characters in ths string to the character array
}
int second_word = 0;
for(i=0;i<str.length();i++) //
if(str_c[i]==' ') //using this I find the character that is space and the next character will be the second word of the array
second_word=i++; //
String str2;
str2=str.substring(second_word).toLowerCase(); //I pput the second word of the string into the str2 variable
System.out.println(str2); //I print the second word
}
}
推荐答案
使用StringTokenizer可以检索第二个单词。
Using StringTokenizer you can retrieve the second word.
使用 Scanner.nextLine()
[ ^ ]获取完整输入文本的方法。
Use the Scanner.nextLine()
[^] method to get the complete input text.
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