CareerCup

String.replaceAll("replaceThis","WithThis");

void replace_string(string src, const string key,const string replace){
   int k = src.find(key);
      while (k>0){
         src.replace(k, replace.length(), replace);
         k = src.find(key);
      }
}

original = raw_input("Enter original string: ")
sub = raw_input("Enter substring: ")
replace = raw_input("Enter string to replace with: ")

index = original.find(sub,0,len(original))
if -1 != index :
    print original[:index] + replace + original[index+len(sub):]
else :
    print "Substring not found"

original = raw_input("Enter original string: ")
sub = raw_input("Enter substring: ")
replace = raw_input("Enter string to replace with: ")

index = original.find(sub,0,len(original))
if -1 != index :
    print original[:index] + replace + original[index+len(sub):]
else :
    print "Substring not found"

main()
{
char s1[100] = "sravani bad",s2[4]="good";
char *ptr,*temp;
ptr = s1;
while(ptr = strstr(ptr,s2))
{
strcpy(temp,ptr+strlen(s2));
strncpy(ptr,s2);
strcat(s1,temp);
}
}

main()
{
char s1[100] = "sravani bad",s2[4]="good";
char *ptr,*temp;
ptr = s1;
while(ptr = strstr(ptr,s2))
{
strcpy(temp,ptr+strlen(s2));
strncpy(ptr,s2);
strcat(s1,temp);
}
}

static void replaceSubstring(String original,String substring, String replace){

if(original.contains(substring)){
String newStr = original.replaceFirst(substring, replace);
System.out.println(newStr);
}
else{
System.out.println("Substring not present");
}
}

static void replaceSubstring(String original,String substring, String replace){
       
        if(original.contains(substring)){
            String newStr = original.replaceFirst(substring, replace);
            System.out.println(newStr); 
        }
        else{
            System.out.println("Substring not present");
        }
    }

#include<iostream>
#include<string>
using namespace std;
int main()
{
int index=0;
string src,substr,replace;
cin>>src>>substr>>replace;
index=src.find(substr,index);
while(index<=(src.length()-replace.length())){

src.replace(index,replace.length(),replace);
index=src.find(substr,index);

}
cout<<src;
return 0;
}

public class StringIndexOf {

public static void main(String args[]){

String s = args[0];
String substring = args[1];
String newString = args[2];
String output = "";

int length = substring.length();

int i =0;
int index = s.indexOf(substring);
if(index!=-1){

output = s.substring(0, index)+newString+s.substring(index+length, s.length());
}
System.out.println(s);
System.out.println(substring);
System.out.println(newString);

System.out.println(output);

}

}