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How to Solve Substrings of Size Three with Distinct Characters Problem
Master the Substrings of Size Three with Distinct Characters LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsEasy#1876
LeetCode ProblemSubstrings of Size Three with Distinct Characters
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.
Hash TableStringSliding WindowCounting
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Problem Breakdown
Understanding the Substrings of Size Three with Distinct Characters Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
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.
EasyProblem #1876
LeetCodeSubstrings of Size Three with Distinct Characters
Related Topics
Hash TableStringSliding WindowCounting
How Phantom Code Helps
Get real-time assistance for Substrings of Size Three with Distinct Characters problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
s = "xyzzaz"
Output
1
# Example 2
Input
s = "aababcabc"
Output
4
Constraints
1 <= s.length <= 100
s consists of lowercase English letters.
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Solve Substrings of Size Three with Distinct Characters — A string is good if there are no repeated characters. Given a string s, ret...
Here's the optimal approach using Hash Table:
def solve(input):
# Optimal O(n) solution
return result
Time: O(n) | Space: O(n)
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Frequently Asked Questions
Common questions about solving Substrings of Size Three with Distinct Characters and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Substrings of Size Three with Distinct Characters during interviews?
Phantom Code generates complete solutions instantly with proper complexity analysis, letting you focus on explaining your approach and demonstrating problem-solving skills rather than getting stuck on implementation details during high-pressure situations.
What if the interviewer asks follow-up questions or modifications to problems like Substrings of Size Three with Distinct Characters?
Phantom Code adapts in real-time. Screenshot the modified problem or use audio mode to capture the interviewer's follow-up, and get an updated solution within seconds — including edge cases and optimizations.
Can Phantom Code help me communicate my solution for problems like Substrings of Size Three with Distinct Characters?
Yes. Phantom Code provides step-by-step approach explanations with 3 progressive thoughts, so you can walk through your solution naturally. It also provides time and space complexity analysis to discuss trade-offs.
How does Phantom Code assist with different programming languages for Substrings of Size Three with Distinct Characters type problems?
Phantom Code supports 11 programming languages including Python, Java, C++, JavaScript, TypeScript, Go, Rust, Ruby, Swift, Kotlin, and C#. Set your preferred language and get idiomatic solutions.
What coding mistakes does Phantom Code help me avoid during Substrings of Size Three with Distinct Characters interviews?
Phantom Code catches common mistakes like off-by-one errors, missing edge cases, incorrect base conditions, and suboptimal approaches. It provides clean, well-structured code that handles all edge cases.
Is Phantom Code detectable when solving problems like Substrings of Size Three with Distinct Characters during live interviews?
No. Phantom Code runs as an invisible desktop overlay that doesn't appear in screen shares, recordings, or proctoring software. It works with Zoom, HackerRank, CodeSignal, CoderPad, and all major platforms.
How does Phantom Code help when I'm struggling with Substrings of Size Three with Distinct Characters style questions under pressure?
The AI provides structured guidance: first the approach (what algorithm/data structure to use and why), then the implementation with clean code, and finally complexity analysis. This helps you think clearly even under pressure.
Does Phantom Code work for the coding platforms used in Substrings of Size Three with Distinct Characters interviews?
Yes. Phantom Code works with all major coding platforms including LeetCode, HackerRank, CodeSignal, CoderPad, HackerEarth, and any browser-based coding environment.
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