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B. Diverse Substrings A non-empty digit string is diverse if the number of occurrences of each character in it doesn't exceed the number of distinct c 阅读全文
posted @ 2022-11-14 21:21
onlyblues
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Maximum Number of Non-overlapping Palindrome Substrings You are given a string s and a positive integer k . Select a set of non-overlapping substrings 阅读全文
posted @ 2022-11-14 20:38
onlyblues
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Minimum Number of Operations to Sort a Binary Tree by Level You are given the root of a binary tree with unique values. In one operation, you can choo 阅读全文
posted @ 2022-11-14 20:10
onlyblues
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