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Problem: Count Substrings with Only One Distinct Letter

med
30 min
Explore how to count the total number of substrings within a string that contain only one distinct letter. This lesson helps you understand the problem constraints, apply efficient mathematical techniques, and solve coding challenges related to string substrings in coding interviews.

Statement

Given a string s, return the total number of substrings that contain only one distinct letter.

Constraints:

  • 11 \leq s.length 1000\leq 1000

  • s[i] consists of only lowercase English letters.

Tap here to switch tabs
Problem
Ask
Submissions

Problem: Count Substrings with Only One Distinct Letter

med
30 min
Explore how to count the total number of substrings within a string that contain only one distinct letter. This lesson helps you understand the problem constraints, apply efficient mathematical techniques, and solve coding challenges related to string substrings in coding interviews.

Statement

Given a string s, return the total number of substrings that contain only one distinct letter.

Constraints:

  • 11 \leq s.length 1000\leq 1000

  • s[i] consists of only lowercase English letters.