aoc9

arr = document.getElementsByTagName("pre")[0].innerText.split("\n").filter(function(n){return n;});

basins = [];
var visited = []		

arr.forEach(function(row, x){
	row.split("").forEach(function(cell,y) {
		if (x>0 && cell >= arr[x-1][y] || y>0 && cell >= arr[x][y-1] || 
		x<99 && cell >= arr[x+1][y] || y<99 && cell >= arr[x][y+1]) {
			return;
		}
		console.log("SEARCHING",x,y,cell )
		basinSearch = function(a, b) {
			if (visited.find(function(x){return x[0]==a && x[1]==b}) || arr[a][b]==9) {
				return 0;
			}
			size = 1;
			visited.push([a,b]);
			if (a>0 && arr[a][b] <= arr[a-1][b]) {
				size += basinSearch(a-1,b);
			}
			if (b>0 && arr[a][b] <= arr[a][b-1]) {
				size += basinSearch(a,b-1);
			}
			if (a<99 && arr[a][b] <= arr[a+1][b]) {
				size += basinSearch(a+1,b);
			}
			if (b<99 && arr[a][b] <= arr[a][b+1]) {
				size += basinSearch(a,b+1);
			}
			return size;
		}
		basins.push(basinSearch(x,y));
	});
})
	basins		

	



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