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How to Solve Kth Smallest Amount With Single Denomination Combination Problem
Master the Kth Smallest Amount With Single Denomination Combination LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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LeetCode ProblemKth Smallest Amount With Single Denomination Combination
You are given an integer array coins representing coins of different denominations and an integer k. You have an infinite number of coins of each denomination. However, you are not allowed to combine coins of different denominations. Return the kth smallest amount that can be made using these coins.
ArrayMathBinary SearchBit ManipulationCombinatoricsNumber Theory
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Problem Breakdown
Understanding the Kth Smallest Amount With Single Denomination Combination Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given an integer array coins representing coins of different denominations and an integer k. You have an infinite number of coins of each denomination. However, you are not allowed to combine coins of different denominations. Return the kth smallest amount that can be made using these coins.
HardProblem #3116
LeetCodeKth Smallest Amount With Single Denomination Combination
Related Topics
ArrayMathBinary SearchBit ManipulationCombinatoricsNumber Theory
How Phantom Code Helps
Get real-time assistance for Kth Smallest Amount With Single Denomination Combination problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
coins = [3,6,9], k = 3
Output
9
# Example 2
Input
coins = [5,2], k = 7
Output
12
Constraints
1 <= coins.length <= 15
1 <= coins[i] <= 25
1 <= k <= 2 * 109
coins contains pairwise distinct integers.
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Solve Kth Smallest Amount With Single Denomination Combination — You are given an integer array coins representing coins of different denominatio...
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 Kth Smallest Amount With Single Denomination Combination and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Kth Smallest Amount With Single Denomination Combination 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 Kth Smallest Amount With Single Denomination Combination?
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 Kth Smallest Amount With Single Denomination Combination?
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 Kth Smallest Amount With Single Denomination Combination 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 Kth Smallest Amount With Single Denomination Combination 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 Kth Smallest Amount With Single Denomination Combination 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 Kth Smallest Amount With Single Denomination Combination 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 Kth Smallest Amount With Single Denomination Combination 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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