[英]Java Compress no return?
what my code is supposed to be doing is converting input strings and outputing the compressed versions我的代码应该做的是转换输入字符串并输出压缩版本
Ex.前任。 Input: "qqqwww" Output: "3q3w".输入:“qqqwww” 输出:“3q3w”。
But my code returns nothing.但我的代码什么都不返回。
PS IO is just an input system. PS IO 只是一个输入系统。
public class Compress {
public static String compress(String original){
String s = "";
char s1 = original.charAt(0);
int count = 1;
for(int i = 0; i < original.length(); i++){
char c = original.charAt(i);
if(c == s1){
count++;
}
else{
s = s + count + s1; //i think the problem is here right???
count = 1;
}
s1 = c;
}
return s;
}
public static void main(String[] args){
String s = IO.readString();
String y = compress(s);
System.out.println(y);
}
}
Your could should look like this :你可能应该是这样的:
String returnString="";
for (int index = 0; index < original.length();) {
char currentChar = original.charAt(index);
int counter=1;
while(++index < original.length() && currentChar==original.charAt(index)) {
counter++;
}
returnString=returnString+counter+currentChar;
}
return returnString;
}
Here we loop thought the string (outer for loop) and check if the adjacent values are same the we keep adding them.在这里,我们循环考虑字符串(外部 for 循环)并检查相邻值是否相同,然后我们继续添加它们。 (inner while loop) (内部while循环)
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