JAVA_Island Perimeter

JAVA_Island Perimeter_LeetCode 463 풀이 class Solution { public int islandPerimeter(int[][] grid) { int cnt=0; for(int i = 0;i < grid.length;i++){ for(int j = 0;j < grid[i].length;j++){ if(grid[i][j] == 1){ cnt+=4; if(i > 0 && grid[i-1][j] == 1) cnt-=2; if(j > 0 && grid[i][j-1] == 1) cnt-=2; } } } return cnt; } } * 출처 Level up your coding skills and quickly land a job. This is the best place to expand your knowledge and get prepared for your next interview. leetcode.com...

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