gistfile1.cpp

#include <iostream>
#include <string>
#include <cstring>

using namespace std;

//reverse string
string bt_reverse(string input) {
	return string(input.rbegin(),input.rend());
}

//replace string
//input: input, from, to, num
//output: string
string bt_replace(string input, string from, string to, int type) {
	if (type==0) {
		while (input.find(from)!=string::npos) {
			input.replace(input.find(from),from.length(),to);
		}
	} else {
		for (int i=0;i<type;i++) {
			input.replace(input.find(from),from.length(),to);
		}
	}
	return input;
}

//split string
//input: address output, input, cut
//output: size of word
int bt_split(string *output, string input, string cut) {
	char *pch, ichar[1000], icut[1000];
	int c=0;
	
	strcpy(ichar,input.c_str());
	strcpy(icut,cut.c_str());
	pch = strtok(ichar, icut);
	
	while (pch != NULL) {
		output[c++]=string(pch);
		pch = strtok (NULL, icut);
	}
	return c;
}