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How to Solve Minimize Hamming Distance After Swap Operations Problem
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Medium#1722
LeetCode ProblemMinimize Hamming Distance After Swap Operations
You are given two integer arrays, source and target, both of length n. You are also given an array allowedSwaps where each allowedSwaps[i] = [ai, bi] indicates that you are allowed to swap the elements at index ai and index bi (0-indexed) of array source. Note that you can swap elements at a specific pair of indices multiple times and in any order. The Hamming distance of two arrays of the same length, source and target, is the number of positions where the elements are different. Formally, it is the number of indices i for 0 <= i <= n-1 where source[i] != target[i] (0-indexed). Return the minimum Hamming distance of source and target after performing any amount of swap operations on array source.
ArrayDepth-First SearchUnion Find
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Problem Breakdown
Understanding the Minimize Hamming Distance After Swap Operations Problem
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Problem Statement
You are given two integer arrays, source and target, both of length n. You are also given an array allowedSwaps where each allowedSwaps[i] = [ai, bi] indicates that you are allowed to swap the elements at index ai and index bi (0-indexed) of array source. Note that you can swap elements at a specific pair of indices multiple times and in any order. The Hamming distance of two arrays of the same length, source and target, is the number of positions where the elements are different. Formally, it is the number of indices i for 0 <= i <= n-1 where source[i] != target[i] (0-indexed). Return the minimum Hamming distance of source and target after performing any amount of swap operations on array source.
MediumProblem #1722
LeetCodeMinimize Hamming Distance After Swap Operations
Related Topics
ArrayDepth-First SearchUnion Find
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Examples
# Example 1
Input
source = [1,2,3,4], target = [2,1,4,5], allowedSwaps = [[0,1],[2,3]]
Output
1
# Example 2
Input
source = [1,2,3,4], target = [1,3,2,4], allowedSwaps = []
Output
2
# Example 3
Input
source = [5,1,2,4,3], target = [1,5,4,2,3], allowedSwaps = [[0,4],[4,2],[1,3],[1,4]]
Output
0
Constraints
n == source.length == target.length
1 <= n <= 105
1 <= source[i], target[i] <= 105
0 <= allowedSwaps.length <= 105
allowedSwaps[i].length == 2
0 <= ai, bi <= n - 1
ai != bi
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Solve Minimize Hamming Distance After Swap Operations — You are given two integer arrays, source and target, both of length n. You are a...
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Frequently Asked Questions
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