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Impara Coloring Pixels | Solving the Problems using BFS
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bookColoring Pixels

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Imagine you have an image a of size m*n, and there are some areas painted black or white (marked 1 or 0 in array). When you touch the pixel a[i][j], you color it with number 2, and if you colored some pixel, you’ll also color all 4-directionally connected pixels of the same color.

Example 1

Input: m=4, n=6, x=1, y=2

1 1 1 0 0 0

0 1 1 0 0 0

1 1 0 0 1 1

0 0 1 1 0 0

Output:

2 2 2 0 0 0

0 2 2 0 0 0

2 2 0 0 1 1

0 0 1 1 0 0

Example 2

Input: m=4, n=6, x=2, y=5

1 1 1 0 0 0

0 1 1 0 0 0

1 1 0 0 1 1

0 0 1 1 0 0

Output:

1 1 1 0 0 0

0 1 1 0 0 0

1 1 0 0 2 2

0 0 1 1 0 0

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Sezione 4. Capitolo 1
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bookColoring Pixels

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Compito

Swipe to start coding

Imagine you have an image a of size m*n, and there are some areas painted black or white (marked 1 or 0 in array). When you touch the pixel a[i][j], you color it with number 2, and if you colored some pixel, you’ll also color all 4-directionally connected pixels of the same color.

Example 1

Input: m=4, n=6, x=1, y=2

1 1 1 0 0 0

0 1 1 0 0 0

1 1 0 0 1 1

0 0 1 1 0 0

Output:

2 2 2 0 0 0

0 2 2 0 0 0

2 2 0 0 1 1

0 0 1 1 0 0

Example 2

Input: m=4, n=6, x=2, y=5

1 1 1 0 0 0

0 1 1 0 0 0

1 1 0 0 1 1

0 0 1 1 0 0

Output:

1 1 1 0 0 0

0 1 1 0 0 0

1 1 0 0 2 2

0 0 1 1 0 0

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Tutto è chiaro?

Come possiamo migliorarlo?

Grazie per i tuoi commenti!

close

Awesome!

Completion rate improved to 7.69
Sezione 4. Capitolo 1
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