Problem Description
从键盘输入一行字符(长度小于100),统计其中单词的个数,各单词以空格分隔,且空格数可以是多个。
Input
输入只有一行句子。仅有空格和英文字母构成。
Output
单词的个数。
Sample Input
stable marriage problem Consists of Matching members
Sample Output
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
String str;
char ch;
str = sc.nextLine();
int len, i, flag = 0, sum = 0;
len = str.length();
for(i = 0; i < len; i++) {
ch = str.charAt(i);
if(ch == ' ') {
flag = 0;
}
else if(flag == 0) {
flag = 1;
sum++;
}
}
System.out.println(sum);
sc.close();
}
}