problem0542

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Published: Sep 11, 2020 License: MIT Imports: 0 Imported by: 0

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542. 01 Matrix

题目

Given a matrix consists of 0 and 1, find the distance of the nearest 0 for each cell.

The distance between two adjacent cells is 1.

Example 1:

Input:
0 0 0
0 1 0
0 0 0

Output:
0 0 0
0 1 0
0 0 0

Example 2:

Input:
0 0 0
0 1 0
1 1 1

Output:
0 0 0
0 1 0
1 2 1

Note:

  1. The number of elements of the given matrix will not exceed 10,000.
  2. There are at least one 0 in the given matrix.
  3. The cells are adjacent in only four directions: up, down, left and right.

解题思路

见程序注释

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