Remove all occurrences of a character in a string

Given a string and a character, remove all the occurrences of the character in the string.

Examples:

Input : s = "geeksforgeeks"
c = 'e'
Output : s = "gksforgks"

Input : s = "geeksforgeeks"
c = 'g'
Output : s = "eeksforeeks"

Input : s = "geeksforgeeks"
c = 'k'
Output : s = "geesforgees"

[Approach 1] Using Built-In Method - O(n) Time and O(1) Space

This approach uses the built-in Replace() function. It directly replaces all occurrences of the given character with an empty string (""), effectively removing them from the original string.

bbc

[Approach 2] Writing Your Own Method - O(n) Time and O(1) Space

This approach iterates through the string and retains only the characters that are not equal to the given character by shifting them toward the beginning of the string. After processing all characters, the string is resized to remove the leftover characters at the end.

eeksforeeks