islandPerimeter.js

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-islandPerimeter.js
+// Island Perimeter%0A// You are given a map in form of a two-dimensional integer grid where 1 represents land and 0 represents water.%0A// Grid cells are connected horizontally/vertically (not diagonally). The grid is completely surrounded by water,%0A// and there is exactly one island (i.e., one or more connected land cells).%0A// The island doesn't have %22lakes%22 (water inside that isn't connected to the water around the island).%0A// One cell is a square with side length 1. The grid is rectangular, width and height don't exceed 100.%0A// Determine the perimeter of the island.%0A%0A// Example:%0A%0A// %5B%5B0,1,0,0%5D,%0A//  %5B1,1,1,0%5D,%0A//  %5B0,1,0,0%5D,%0A//  %5B1,1,0,0%5D%5D%0A%0A// Answer: 16
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