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How to Solve Minimum Swaps to Sort by Digit Sum Problem
Master the Minimum Swaps to Sort by Digit Sum LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsMedium#3551
LeetCode ProblemMinimum Swaps to Sort by Digit Sum
You are given an array nums of distinct positive integers. You need to sort the array in increasing order based on the sum of the digits of each number. If two numbers have the same digit sum, the smaller number appears first in the sorted order. Return the minimum number of swaps required to rearrange nums into this sorted order. A swap is defined as exchanging the values at two distinct positions in the array.
ArrayHash TableSorting
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Problem Breakdown
Understanding the Minimum Swaps to Sort by Digit Sum Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
You are given an array nums of distinct positive integers. You need to sort the array in increasing order based on the sum of the digits of each number. If two numbers have the same digit sum, the smaller number appears first in the sorted order. Return the minimum number of swaps required to rearrange nums into this sorted order. A swap is defined as exchanging the values at two distinct positions in the array.
MediumProblem #3551
LeetCodeMinimum Swaps to Sort by Digit Sum
Related Topics
ArrayHash TableSorting
How Phantom Code Helps
Get real-time assistance for Minimum Swaps to Sort by Digit Sum problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
nums = [37,100]
Output
1
# Example 2
Input
nums = [22,14,33,7]
Output
0
# Example 3
Input
nums = [18,43,34,16]
Output
2
Constraints
1 <= nums.length <= 105
1 <= nums[i] <= 109
nums consists of distinct positive integers.
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Solve Minimum Swaps to Sort by Digit Sum — You are given an array nums of distinct positive integers. You need to sort the ...
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def solve(input):
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Frequently Asked Questions
Common questions about solving Minimum Swaps to Sort by Digit Sum and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Minimum Swaps to Sort by Digit Sum 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 Minimum Swaps to Sort by Digit Sum?
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 Minimum Swaps to Sort by Digit Sum?
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 Minimum Swaps to Sort by Digit Sum 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 Minimum Swaps to Sort by Digit Sum 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 Minimum Swaps to Sort by Digit Sum 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 Minimum Swaps to Sort by Digit Sum 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 Minimum Swaps to Sort by Digit Sum 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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