Minesweeper
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The Problem
Have you ever played Minesweeper? It's a cute little game which comes within a certain Operating System which name we can't really remember. Well, the goal of the game is to find where are all the mines within a MxN field. To help you, the game shows a number in a square which tells you how many mines there are adjacent to that square. For instance, supose the following 4x4 field with 2 mines (which are represented by an * character):
*........*......If we would represent the same field placing the hint numbers described above, we would end up with:
*10022101*101110As you may have already noticed, each square may have at most 8 adjacent squares.
The Input
The input will consist of an arbitrary number of fields. The first line of each field contains two integers n and m (0 < n,m <= 100) which stands for the number of lines and columns of the field respectively. The next n lines contains exactly m characters and represent the field. Each safe square is represented by an "." character (without the quotes) and each mine square is represented by an "*" character (also without the quotes). The first field line where n = m = 0 represents the end of input and should not be processed.
The Output
For each field, you must print the following message in a line alone:
Field #x:Where x stands for the number of the field (starting from 1). The next n lines should contain the field with the "." characters replaced by the number of adjacent mines to that square. There must be an empty line between field outputs.
Sample Input
4 4*........*......3 5**.........*...0 0
Sample Output
Field #1:*10022101*101110Field #2:**100332001*100
位向量解决
#include <stdio.h>#include <string.h>#define max 100char mine[max][max];int main(){ int m, n, i, j, k, count = 1; int px[8] = {-1,-1,-1, 0, 0, 1, 1, 1}; int py[8] = {-1, 0, 1,-1, 1,-1, 0, 1}; while (scanf("%d %d", &n, &m) && (m || n)) { memset(mine, '.', sizeof(mine)); for (i = 0; i < n; i++) for (j = 0; j < m; j++) scanf(" %c", &mine[i][j]); for (i = 0; i < n; i++) for (j = 0; j < m; j++) { int tmp = 0; if (mine[i][j] == '.') for (k = 0; k < 8; k++) { if (mine[i+px[k]][j+py[k]] == '*') tmp++; mine[i][j] = tmp + '0'; } } if (count != 1) printf("\n"); printf("Field #%d:\n", count++); for (i = 0; i < n; i++) { for (j = 0; j < m; j++) printf("%c", mine[i][j]); printf("\n"); } } return 0;}
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