Given a string s we have to find the lexicographical maximum substring of a string
Input : s = "ababaa" Output : babaa Explanation : "babaa" is the maximum lexicographic susbtring formed from this string Input : s = "asdfaa" Output : sdfaa
The idea is simple, we traverse through all substrings. For every substring, we compare it with current result and update result if needed.
Below is the implementation:
# Python 3 program to find the
# lexicographically maximum substring.
# loop to find the max leicographic
# substring in the substring array
mx = “”
for i in range(len(str)):
mx = max(mx, str[i:])
# Driver code
if __name__ == ‘__main__’:
str = “ababaa”
# This code is contributed by
Time Complexity : O(n)
Space Complexity : O(n)
We find largest character and all its indexes. Now we simply traverse through all instances of the largest character to find lexicographically maximum substring.
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