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There are some red and blue tiles arranged circularly. You are given an array of integers colors and a 2D integers array queries. The color of tile i is represented by colors[i]: An alternating group is a contiguous subset of tiles in the circle with alternating colors (each tile in the group except the first and last one has a different color from its adjacent tiles in the group). You have to process queries of two types: Return an array answer containing the results of the queries of the first type in order. Note that since colors represents a circle, the first and the last tiles are considered to be next to each other.
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There are some red and blue tiles arranged circularly. You are given an array of integers colors and a 2D integers array queries. The color of tile i is represented by colors[i]: An alternating group is a contiguous subset of tiles in the circle with alternating colors (each tile in the group except the first and last one has a different color from its adjacent tiles in the group). You have to process queries of two types: Return an array answer containing the results of the queries of the first type in order. Note that since colors represents a circle, the first and the last tiles are considered to be next to each other.
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colors = [0,1,1,0,1], queries = [[2,1,0],[1,4]]
[2]
colors = [0,0,1,0,1,1], queries = [[1,3],[2,3,0],[1,5]]
[2,0]
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Solve Alternating Groups III — There are some red and blue tiles arranged circularly. You are given an array of...
Here's the optimal approach using Array:
Time: O(n) | Space: O(n)
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