package codingInterviewGuide.part5String;

/**
 * Created by Dell on 2017年09月02日.
 */
public class RemoveKZeros {
 public String removeKZeros(String str,int k){
 if(str==null||k<1){
 return str;
 }
 char[] chas=str.toCharArray();
 int count=0,start=-1;
 for (int i=0;i<chas.length;i++){
 if(chas[i]=='0'){
 count++;
 start=start==-1?i:start;
 }else{
 if(count==k){
 while (count--!=0){
 chas[start++]=0;//据说ASCII的0对应的是空,
 }
 }
 count=0;
 start=-1;
 }
 }
 if(count==k){
 while (count--!=0){
 chas[start++]=0;//据说ASCII的0对应的是空,
 }
 }
 return String.valueOf(chas);



 }
}