Given a string S, c1 and c2. Replace character c1 with c2 and c2 with c1.
Input : grrksfoegrrks, c1 = e, c2 = r Output : geeksforgeeks Input : ratul, c1 = t, c2 = h Output : rahul
Traverse through the string and check for the occurrences of c1 and c2. If c1 is found then replace it with c2 and else if c2 is found replace it with c1.
Time Complexity: O(n)
- Replace every character of string by character whose ASCII value is K times more than it
- Replace every character of a string by a different character
- Modify the string such that every character gets replaced with the next character in the keyboard
- Find a string such that every character is lexicographically greater than its immediate next character
- Check if frequency of character in one string is a factor or multiple of frequency of same character in other string
- Map every character of one string to another such that all occurrences are mapped to the same character
- Replace all occurrences of pi with 3.14 in a given string
- Replace two substrings (of a string) with each other
- Lexicographically smallest string formed by appending a character from first K characters of a string | Set 2
- Lexicographically smallest string formed by appending a character from the first K characters of a given string
- Find the character in first string that is present at minimum index in second string
- Replace all occurrences of a string with space
- URLify a given string (Replace spaces is %20)
- Queries to find the first non-repeating character in the sub-string of a string
- Queries to find the last non-repeating character in the sub-string of a given string
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