C program to delete a substring from a given string

Connect and share knowledge within a single location that is structured and easy to search. I want to remove a particular substring from a string for example my main string is "ababccdabce" and I want to remove "abc" from it so it will become "abcde".

I just wanted to know if there is a predefined function in C to do that, and if not, how to do it? There is no predefined function in C to remove a given substring from a C string, but you can write one using strstr and memmove. Note that if you remove the substring in place, you cannot use memcpy nor strcpy because these have undefined behavior if the source and destination arrays overlap. Further honing the code, I came up with an even more efficient version using the 2 finger-method: only copying the fragments between matches starting after the first match:.

Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Remove a substring from a string in C Ask Question. Asked 4 years, 2 months ago.

Active 6 months ago. Viewed 23k times. Learn how your comment data is processed. Related Posts. Leave a Comment Cancel Reply Your email address will not be published.

Consenting to these technologies will allow us to process data such as browsing behavior or unique IDs on this site. Not consenting or withdrawing consent, may adversely affect certain features and functions. Given a string str. You are allowed to delete only some contiguous characters if all the characters are same in a single operation. The task is to find the minimum number of operations required to completely delete the string. Python3 implementation of the approach.

When a single character is deleted. When a group of consecutive characters. When both the characters are same then. This code is contributed by Rituraj Jain. WriteLine findMinimumDeletion 0, n - 1, dp, s ;.

Previous Count sub-arrays whose product is divisible by k. Next Print a number as string of 'A' and 'B' in lexicographic order. Recommended Articles. Count of index pairs i, j such that string after deleting ith character is equal to string after deleting jth character. Minimum substring removals required to make all remaining characters of a string same.