Create 1219-path-with-maximum-gold.js

Author: everthis

1219-path-with-maximum-gold.js

@@ -0,0 +1,40 @@
+/**
+ * @param {number[][]} grid
+ * @return {number}
+ */
+const getMaximumGold = function(grid) {
+  const m = grid.length, n = grid[0].length
+  const arr = []
+  const dirs = [[-1, 0], [1, 0], [0, 1], [0, -1]]
+  const visited = new Set()
+  for(let i = 0; i < m; i++) {
+    for(let j = 0; j < n; j++) {
+      if(grid[i][j] !== 0) arr.push([i, j])
+    }
+  }
+  let res = 0
+  
+  for(const [i, j] of arr) {
+    visited.clear()
+    visited.add(`${i},${j}`)
+    dfs(i, j, grid[i][j])
+  }
+  
+  return res
+  
+  function dfs(i, j, cur) {
+
+    res = Math.max(res, cur)
+    for(const [dx, dy] of dirs) {
+      const nx = i + dx
+      const ny = j + dy
+      const key = `${nx},${ny}`
+      if(nx >= 0 && nx < m && ny >= 0 && ny < n && !visited.has(key) && grid[nx][ny] !== 0) {
+        visited.add(key)
+        dfs(nx, ny, cur + grid[nx][ny])
+        visited.delete(key)
+      }
+    }
+  }
+  
+};