题解 | #替换空格#

import java.util.*;

public class Solution { /** * 代码中的类名、方法名、参数名已经指定，请勿修改，直接返回方法规定的值即可 * * * @param s string字符串 * @return string字符串 */ public String replaceSpace (String s) { int size = s.length(); int index = 0; char[] ch = new char[size * 3]; // char[] s1 = s.toCharArray(); for(int i = 0;i < size; i++){ char c = s.charAt(i); if(c == ' '){ ch[index ++] = '%'; ch[index ++] = '2'; ch[index ++] = '0';

        }else{
            ch[index ++] = c;
        }
        
    }
    String news = new String(ch,0,index);
    return news;
    // write code here
}

}