Write a program to replace a part of a string with another string.
Task Description
We will apply a series of commands on a string S of length L. There are two commands. The first command is p (print), which will simply print the string S. The other command is s (substitute), which will replace the first occurrence of a string A in S with another string B. The s command starts with a character ‘s’, and the first character after ‘s’ is the delimiter, which will separate the two strings A and B. For example, s/cd/ef/ has / as the delimiter, A as cd and B as ef. Therefore we will replace the first occurrence of cd in S with ef. Note that the delimiter is the first character after 's' so it can be any character. For example, if S is qwerasdfqwerzxcv and the instruction is s%qwer%zxcv%, then the delimiter is %, and A and B are qwer and zxcv, respectively. Finally S will become zxcvasdfqwerzxcv. Also note that if there is no A in S then S remain unchanged.
The following example list the commands and the outcome of the commands.
string S
command
delimiter
result
output
qwerasdfqwerzxcv
s%qwer%zxcv%
%
zxcvasdfqwerzxcv
zxcvasdfzxcvzxcv
sazxca%a
a
%vasdfqwerzxcv
%vasdfqwerzxcv
p
%vasdfqwerzxcv
%vasdfqwerzxcv
s3123asdf3
3
%vasdfqwerzxcv
Subtask
20 points: The lengths of string A and string B are always 1.
30 points: The lengths of string A and string B are the same.
50 points: The lengths of string A and string B may be different.
Input Format
The input contains only one test case. The first line contains the string S. The rest of the input has a series of commands. Each line has one command. It is guaranteed that the length of string S will not exceed 1023 during the operations.
1 < L < 1024
1 < length of string in each instruction < 501
Output Format
Print the current string if the instruction is ‘p’.
Sample Input 1
abbcccddddeeeeeffffff
s%ccc%a%
p
s/d/k/
p
Sefffefe
p
s~a~0~
p
Write a program to replace a part of a string with another string.
Task Description
We will apply a series of commands on a string S of length L. There are two commands. The first command is p (print), which will simply print the string S. The other command is s (substitute), which will replace the first occurrence of a string A in S with another string B. The s command starts with a character ‘s’, and the first character after ‘s’ is the delimiter, which will separate the two strings A and B. For example,
s/cd/ef/has/as the delimiter, A as cd and B as ef. Therefore we will replace the first occurrence of cd in S with ef. Note that the delimiter is the first character after 's' so it can be any character. For example, if S isqwerasdfqwerzxcvand the instruction iss%qwer%zxcv%, then the delimiter is%, and A and B areqwerandzxcv, respectively. Finally S will becomezxcvasdfqwerzxcv. Also note that if there is no A in S then S remain unchanged.The following example list the commands and the outcome of the commands.
Subtask
Input Format
The input contains only one test case. The first line contains the string S. The rest of the input has a series of commands. Each line has one command. It is guaranteed that the length of string S will not exceed 1023 during the operations.
1 < L < 1024
1 < length of string in each instruction < 501
Output Format
Print the current string if the instruction is ‘p’.
Sample Input 1
Sample Output 1
Sample Input 2
Sample Output 2
Sample Input 3
Sample Output 3