Leetcode 451 Solution
This article provides solution to leetcode question 451 (sort-characters-by-frequency)
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Leetcode Question Link
class Solution: def frequencySort(self, s: str) -> str: m = collections.defaultdict(int) arr =  for ch in s: m[ch] += 1 arr.append(ch) arr.sort(key=lambda x: (-m[x], -ord(x))) return "".join(arr)