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How to Solve Find Good Days to Rob the Bank Problem
Master the Find Good Days to Rob the Bank LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsMedium#2100
LeetCode ProblemFind Good Days to Rob the Bank
You and a gang of thieves are planning on robbing a bank. You are given a 0-indexed integer array security, where security[i] is the number of guards on duty on the ith day. The days are numbered starting from 0. You are also given an integer time. The ith day is a good day to rob the bank if: More formally, this means day i is a good day to rob the bank if and only if security[i - time] >= security[i - time + 1] >= ... >= security[i] <= ... <= security[i + time - 1] <= security[i + time]. Return a list of all days (0-indexed) that are good days to rob the bank. The order that the days are returned in does not matter.
ArrayDynamic ProgrammingPrefix Sum
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Problem Breakdown
Understanding the Find Good Days to Rob the Bank Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You and a gang of thieves are planning on robbing a bank. You are given a 0-indexed integer array security, where security[i] is the number of guards on duty on the ith day. The days are numbered starting from 0. You are also given an integer time. The ith day is a good day to rob the bank if: More formally, this means day i is a good day to rob the bank if and only if security[i - time] >= security[i - time + 1] >= ... >= security[i] <= ... <= security[i + time - 1] <= security[i + time]. Return a list of all days (0-indexed) that are good days to rob the bank. The order that the days are returned in does not matter.
MediumProblem #2100
LeetCodeFind Good Days to Rob the Bank
Related Topics
ArrayDynamic ProgrammingPrefix Sum
How Phantom Code Helps
Get real-time assistance for Find Good Days to Rob the Bank problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
security = [5,3,3,3,5,6,2], time = 2
Output
[2,3]
# Example 2
Input
security = [1,1,1,1,1], time = 0
Output
[0,1,2,3,4]
# Example 3
Input
security = [1,2,3,4,5,6], time = 2
Output
[]
Constraints
1 <= security.length <= 105
0 <= security[i], time <= 105
How Phantom Code Helps with LeetCode Problems
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Solve Find Good Days to Rob the Bank — You and a gang of thieves are planning on robbing a bank. You are given a 0-inde...
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 Good Days to Rob the Bank and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Find Good Days to Rob the Bank 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 Good Days to Rob the Bank?
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 Good Days to Rob the Bank?
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 Good Days to Rob the Bank 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 Good Days to Rob the Bank 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 Good Days to Rob the Bank 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 Good Days to Rob the Bank 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 Good Days to Rob the Bank 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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