Programmers_정수 삼각형_java

https://school.programmers.co.kr/learn/courses/30/lessons/43105

프로그래머스

import java.util.*;

class Solution {
    public int solution(int[][] triangle) {
        int answer = 0;
        
        int size = triangle.length;
        int[][] dp = new int[size][size];
        dp[0][0] = triangle[0][0];
        for(int i = 1; i<size; i++){
            for(int j = 0; j<=i; j++){                
                if(j>0){
                    dp[i][j] = Math.max(dp[i][j], dp[i-1][j-1] + triangle[i][j]);
                }
                if(j<i){
                    dp[i][j] = Math.max(dp[i][j], dp[i-1][j] + triangle[i][j]);
                }  
                if(i == size-1){
                    answer = Math.max(answer, dp[i][j]);
                }
            }     
        }
        
        return answer;
    }
}