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Problem
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Problem: Count Substrings with Only One Distinct Letter
15 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:
s.lengths[i]consists of only lowercase English letters.
Examples
Understand the problem
Figure it out!
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Problem
Submissions
Problem: Count Substrings with Only One Distinct Letter
15 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:
s.lengths[i]consists of only lowercase English letters.
Examples
Understand the problem
Figure it out!
Try it yourself
Unlock AI-Powered LearningUpgrade to smarter learning with instant explanations of Ask Agent, Personalized Interview Prep, Real-World Projects, 3 AI Mock Interviews per month, and Personalized Paths