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How to Solve Permutation Difference between Two Strings Problem
Master the Permutation Difference between Two Strings LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsEasy#3146
LeetCode ProblemPermutation Difference between Two Strings
You are given two strings s and t such that every character occurs at most once in s and t is a permutation of s. The permutation difference between s and t is defined as the sum of the absolute difference between the index of the occurrence of each character in s and the index of the occurrence of the same character in t. Return the permutation difference between s and t.
Hash TableString
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Problem Breakdown
Understanding the Permutation Difference between Two Strings Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given two strings s and t such that every character occurs at most once in s and t is a permutation of s. The permutation difference between s and t is defined as the sum of the absolute difference between the index of the occurrence of each character in s and the index of the occurrence of the same character in t. Return the permutation difference between s and t.
EasyProblem #3146
LeetCodePermutation Difference between Two Strings
Related Topics
Hash TableString
How Phantom Code Helps
Get real-time assistance for Permutation Difference between Two Strings problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
s = "abc", t = "bac"
Output
2
# Example 2
Input
s = "abcde", t = "edbac"
Output
12
Constraints
1 <= s.length <= 26
Each character occurs at most once in s.
t is a permutation of s.
s consists only of lowercase English letters.
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Solve Permutation Difference between Two Strings — You are given two strings s and t such that every character occurs at most once ...
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 Permutation Difference between Two Strings and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Permutation Difference between Two Strings 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 Permutation Difference between Two Strings?
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 Permutation Difference between Two Strings?
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 Permutation Difference between Two Strings 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 Permutation Difference between Two Strings 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 Permutation Difference between Two Strings 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 Permutation Difference between Two Strings 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 Permutation Difference between Two Strings 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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