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How to Solve Find Minimum Time to Reach Last Room II Problem
Master the Find Minimum Time to Reach Last Room II LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsMedium#3342
LeetCode ProblemFind Minimum Time to Reach Last Room II
There is a dungeon with n x m rooms arranged as a grid. You are given a 2D array moveTime of size n x m, where moveTime[i][j] represents the minimum time in seconds when you can start moving to that room. You start from the room (0, 0) at time t = 0 and can move to an adjacent room. Moving between adjacent rooms takes one second for one move and two seconds for the next, alternating between the two. Return the minimum time to reach the room (n - 1, m - 1). Two rooms are adjacent if they share a common wall, either horizontally or vertically.
ArrayGraphHeap (Priority Queue)MatrixShortest Path
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Problem Breakdown
Understanding the Find Minimum Time to Reach Last Room II Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
There is a dungeon with n x m rooms arranged as a grid. You are given a 2D array moveTime of size n x m, where moveTime[i][j] represents the minimum time in seconds when you can start moving to that room. You start from the room (0, 0) at time t = 0 and can move to an adjacent room. Moving between adjacent rooms takes one second for one move and two seconds for the next, alternating between the two. Return the minimum time to reach the room (n - 1, m - 1). Two rooms are adjacent if they share a common wall, either horizontally or vertically.
MediumProblem #3342
LeetCodeFind Minimum Time to Reach Last Room II
Related Topics
ArrayGraphHeap (Priority Queue)MatrixShortest Path
How Phantom Code Helps
Get real-time assistance for Find Minimum Time to Reach Last Room II problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
moveTime = [[0,4],[4,4]]
Output
7
# Example 2
Input
moveTime = [[0,0,0,0],[0,0,0,0]]
Output
6
# Example 3
Input
moveTime = [[0,1],[1,2]]
Output
4
Constraints
2 <= n == moveTime.length <= 750
2 <= m == moveTime[i].length <= 750
0 <= moveTime[i][j] <= 109
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Solve Find Minimum Time to Reach Last Room II — There is a dungeon with n x m rooms arranged as a grid. You are given a 2D array...
Here's the optimal approach using Array:
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 Find Minimum Time to Reach Last Room II and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Find Minimum Time to Reach Last Room II 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 Find Minimum Time to Reach Last Room II?
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 Find Minimum Time to Reach Last Room II?
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 Find Minimum Time to Reach Last Room II 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 Find Minimum Time to Reach Last Room II 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 Find Minimum Time to Reach Last Room II 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 Find Minimum Time to Reach Last Room II 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 Find Minimum Time to Reach Last Room II 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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