Mutations

Task

Read a given string, change the character at a given index and then print the modified string.

Function Description

mutate_string has the following parameters:

string string: the string to change
int position: the index to insert the character at
string character: the character to insert

Returns

string: the altered string

Input Format

The first line contains a string, string. The next line contains an integer position, the index location and a string character, separated by a space.

Sample Input

abracadabra
5 k

Sample Output

abrackdabra