public class Solution extends Object
2272 - Substring With Largest Variance.
Hard
The variance of a string is defined as the largest difference between the number of occurrences of any 2 characters present in the string. Note the two characters may or may not be the same.
Given a string s consisting of lowercase English letters only, return the largest variance possible among all substrings of s.
A substring is a contiguous sequence of characters within a string.
Example 1:
Input: s = “aababbb”
Output: 3
Explanation: All possible variances along with their respective substrings are listed below:
Variance 0 for substrings “a”, “aa”, “ab”, “abab”, “aababb”, “ba”, “b”, “bb”, and “bbb”.
Variance 1 for substrings “aab”, “aba”, “abb”, “aabab”, “ababb”, “aababbb”, and “bab”.
Variance 2 for substrings “aaba”, “ababbb”, “abbb”, and “babb”.
Variance 3 for substring “babbb”.
Since the largest possible variance is 3, we return it.
Example 2:
Input: s = “abcde”
Output: 0
Explanation: No letter occurs more than once in s, so the variance of every substring is 0.
Constraints:
1 <= s.length <= 104s consists of lowercase English letters.| Constructor and Description |
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Solution() |
public int largestVariance(String s)
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