min_del_make_str_special.py (1075B)
| # 3085. Minimum Deletions to Make String K-Special
from collections import Counter
"""
you are given a string 'word' and an integer 'k'. we consider 'word' to be
k-special if '|freq(word[i]) - freq(word[j])| <= k' for all indices 'i' and
'j' in the string. here, 'freq(x)' denotes the frequency of the character 'x'
in the 'word'. and '|y|' denotes the absolute value of 'y'. return the
minimum number of characters you need to delete to make 'word' k-special.
"""
class Solution(object):
def minimumDeletions(self, word, k):
"""
:type word: str
:type k: int
:rtype: int
"""
freq, ans = Counter(word).values(), float("inf")
for i in freq:
curr = 0
for j in freq:
curr += j if j < i else max(0, j - (i + k))
ans = min(ans, curr)
return ans
if __name__ == "__main__":
obj = Solution()
print(obj.minimumDeletions(word="aabcaba", k=0))
print(obj.minimumDeletions(word="dabdcbdcdcd", k=2))
print(obj.minimumDeletions(word="aaabaaa", k=2))
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