public class 剑指Offer_13_机器人的运动范围 {
private int m;
private int n;
private int k;
private int count;
private boolean[][] mark;
private int[][] matrix;
public int movingCount(int m, int n, int k) {
this.m = m;
this.n = n;
this.k = k;
mark = new boolean[m][n];
//记录 每个格子里的 个位数的和
matrix = new int[m][n];
for (int i = 0; i < m; i++) {
for (int j = 0; j < n; j++) {
matrix[i][j] = getVal(i) + getVal(j);
}
}
return process(0, 0);
}
private int process(int i, int j) {
if (i < 0 || j < 0 || i >= m || j >= n || mark[i][j] || matrix[i][j] > k) return 0;
//将 访问的元素 标记为true
mark[i][j] = true;
count = 1 + process(i - 1, j) + process(i + 1, j) + process(i, j - 1) + process(i, j + 1);
return count;
}
//给定一个数!返回他各个位数相加
private int getVal(int n) {
if (n < 10) return n;
int res = 0;
while (n > 0) {
int mod = n % 10;
n /= 10;
res += mod;
}
return res;
}
}
剑指Offer13_机器人的运动范围
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转载自blog.csdn.net/weixin_45399846/article/details/107558238
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