src/main/java/com/fishercoder/solutions/_256.java

package com.fishercoder.solutions;

public class _256 {

    public static class Solution1 {
        public int minCost(int[][] costs) {
            if (costs == null || costs.length == 0) {
                return 0;
            }
            for (int i = 1; i < costs.length; i++) {
                costs[i][0] += Math.min(costs[i - 1][1], costs[i - 1][2]);
                costs[i][1] += Math.min(costs[i - 1][0], costs[i - 1][2]);
                costs[i][2] += Math.min(costs[i - 1][1], costs[i - 1][0]);
            }
            int n = costs.length - 1;
            return Math.min(Math.min(costs[n][0], costs[n][1]), costs[n][2]);
        }
    }
}