public class Solution {
/**
*
* @param m int整型
* @param n int整型
* @return int整型
*/
public int uniquePaths (int m, int n) {
// write code here
//dp[j][j] =
// + dp[i-1][j] + dp[i][j-1]
int[][] dp = new int[m][n];
for(int i = 0;i< m;i++){
for(int j = 0;j< n;j++){
if(i == 0 || j == 0){
dp[i][j] = 1;
continue;
}
dp[i][j] = dp[i-1][j] +dp[i][j-1];
}
}
return dp[m-1][n-1];
}
}