Find the length of the longest substring T of a given string (consists of lowercase letters only) such that every character in T appears no less than k times. Example 1: Input: s = "aaabb", k = 3 Output: 3 The longest substring is "aaa"…
给定一个字符串 s 和正整数 n,请使用你熟悉的编程语言输出 s 中包含不超过 n 种字符的最长子串,如 s="uabbcadbaef",n=4 时应该输出 "abbcadba". # 判断一个字符串里面有几个不同字目 def count_diff(s): arr = [] for i in s: if i not in arr: arr.append(i) return len(arr) # 获得最长子串 def get_longest_str( s, n ):…
Find the length of the longest substring T of a given string (consists of lowercase letters only) such that every character in T appears no less than k times. Example 1: Input: s = "aaabb", k = 3 Output: 3 The longest substring is "aaa"…