Given a string str, the task is to check if the frequency of any character is more than half the length of the given string. The characters can be lowercase or uppercase alphabets, digits and special characters.
Input: str = “AAa*2AAAA”
The frequency of ‘A’ is more than half the length of the string.
Input: str = “abB@2a”
Approach: The problem can be easily solved by using a frequency array of length 28 i.e. 256 as there are 256 different characters. Iterate through the string and increase the count of the character by one in the frequency array every time it is encountered. Finally, iterate through the frequency array to check if the frequency of any character is more than half the length of the string.
Below is the implementation of the above approach:
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