Python – Capitalize repeated characters in a string
Given an input string with lowercase letters, the task is to write a python program to identify the repeated characters in the string and capitalize them.
Input: programming language
Output: pRoGRAMMiNG lANGuAGe
Explanation: r,m,n,a,g are repeated elements
Input: geeks for geeks
Output: GEEKS for GEEKS
Explanation: g,e,k,s are repeated elements
- We have to keep the character of a string as a key and the frequency of each character of the string as a value in the dictionary.
- Traverse the string and check the frequency of each character using a dictionary if the frequency of the character is greater than one then change the character to the uppercase using the upper() function.
GEEKS for GEEKS
Time Complexity: O(n)
Space Complexity: O(n)
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