学习笔记整理之小实现

/**
实现单词的倒序，并且不能有空格
*//


package TsetOO;

public class TestString {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
	String str = "   hellow my son  ";
	int last = str.length()-1;
	int frist = 0;
	char ch[] = str.toCharArray();
	
	for (int i = 0; i < ch.length; i++) {
		if (ch[i] != ' ') {
			break;
		}else {
			frist =i;
		}
	}
	while(frist<last){
		if (ch[last] == ' ') {
			last=last-1;
		}else{
			int l = last;
			while(ch[last] != ' '){
				last--;
			}
			int d = last+1;
			for(int i = d;i<=l;i++){
				System.out.print(ch[i]);
			}
			if (frist != last) {
				System.out.print(" ");
			}
		}
	}
		
	}

}