题目1168：字符串的查找删除(字符串操作)

//
//  1168 字符串的查找删除2.cpp
//  Jobdu
//
//  Created by PengFei_Zheng on 25/04/2017.
//  Copyright © 2017 PengFei_Zheng. All rights reserved.
//

#include <stdio.h>
#include <iostream>
#include <algorithm>
#include <string.h>
#include <cmath>
#define MAX_SIZE 1001

using namespace std;

char str[MAX_SIZE];

int main(){
gets(str);
string a = str;
int lena = (int)a.size();
for(int i = 0 ; i < lena ; i++){
a[i] = tolower(a[i]);
}
while(gets(str)){
string b = str;
string c = b;
int lenb = (int)b.size();
for(int i = 0 ; i < lenb ; i++){
b[i]=tolower(b[i]);
}
int pos = (int)b.find(a,0);
while(pos!=string::npos){
c.erase(pos,lena);
b.erase(pos,lena);
pos = (int)b.find(a,pos);
}
pos = (int)c.find(' ',0);
while(pos!=string::npos){
c.erase(pos,1);
pos = (int)c.find(' ',0);
}
cout<<c<<endl;
}
return 0;
}
/**************************************************************
Problem: 1168
User: zpfbuaa
Language: C++
Result: Accepted
Time:0 ms
Memory:1520 kb
****************************************************************/

//
//  1168 字符串的查找删除.cpp
//  oj
//
//  Created by PengFei_Zheng on 03/04/2017.
//  Copyright © 2017 PengFei_Zheng. All rights reserved.
//

#include <stdio.h>
#include <iostream>
#include <algorithm>
#include <string.h>

char c[1001];
int match_len = 0;
char ch;

using namespace std;

int main(){

scanf("%s",c);
int len = (int)strlen(c);//the length of pattern
ch=getchar();//remove the space or return after input c
while((ch=getchar())!=EOF){//get each char
if(tolower(ch)==tolower(c[match_len])) {//find same character
match_len++;//move index to next position
if(match_len>=len) match_len=0;// reinitation ,if ch==c[len-1] then next i will be assigned len
}
else{
if(match_len==0){//now position is not satisfy
if(ch!=' ') cout<<ch;//cout now char
}
else{//the array c is just right save the cahracter which is not cout to the screen
for(int k=0;k<match_len;k++){//now i keeps to the position max_match_length
cout<<(c[k]);
}
match_len=0;//reinitation i to 0
if(ch != ' ')  putchar(ch);//cout right now character
}
}
}

}
/**************************************************************
Problem: 1168
User: zpfbuaa
Language: C++
Result: Accepted
Time:0 ms
Memory:1520 kb
****************************************************************/