Substrings of Size Three with Distinct Characters - Practice Coding | SlaveCode
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1876. Substrings of Size Three with Distinct Characters
Easy
10 Points
Hash Table
String
Sliding Window
Counting
A string is good if there are no repeated characters.
Given a string s, return the number of good substrings of length three in s.
Note that if there are multiple occurrences of the same substring, every occurrence should be counted.
A substring is a contiguous sequence of characters in a string.
Examples
Example 1
Input: s = "xyzzaz"
Output: 1
Explanation: There are 4 substrings of size 3: "xyz", "yzz", "zza", and "zaz".
The only good substring of length 3 is "xyz".
Example 2
Input: s = "aababcabc"
Output: 4
Explanation: There are 7 substrings of size 3: "aab", "aba", "bab", "abc", "bca", "cab", and "abc".
The good substrings are "abc", "bca", "cab", and "abc".
Constraints
1 <= s.length <= 100
s consists of lowercase English letters.
1876. Substrings of Size Three with Distinct Characters
Easy
10 Points
Hash Table
String
Sliding Window
Counting
A string is good if there are no repeated characters.
Given a string s, return the number of good substrings of length three in s.
Note that if there are multiple occurrences of the same substring, every occurrence should be counted.
A substring is a contiguous sequence of characters in a string.
Examples
Example 1
Input: s = "xyzzaz"
Output: 1
Explanation: There are 4 substrings of size 3: "xyz", "yzz", "zza", and "zaz".
The only good substring of length 3 is "xyz".
Example 2
Input: s = "aababcabc"
Output: 4
Explanation: There are 7 substrings of size 3: "aab", "aba", "bab", "abc", "bca", "cab", and "abc".
The good substrings are "abc", "bca", "cab", and "abc".