Update 312-burst-balloons.js

Author: everthis

312-burst-balloons.js

@@ -1,3 +1,28 @@
+function maxCoins(arr) {
+  const len = arr.length
+  const nums = Array(len + 2).fill(0);
+  let n = 1;
+  for (const x of arr) if (x > 0) nums[n++] = x;
+  nums[0] = nums[n++] = 1;
+
+  const dp = Array.from({ length: n }, () => Array(n).fill(0));
+  for (let k = 2; k < n; k++) {
+    for (let left = 0; left < n - k; left++) {
+      let right = left + k;
+      for (let i = left + 1; i < right; i++) {
+        dp[left][right] = Math.max(
+          dp[left][right],
+          nums[left] * nums[i] * nums[right] + dp[left][i] + dp[i][right],
+        );
+      }
+    }
+  }
+
+  return dp[0][n - 1];
+}
+
+// another
+
 /**
  * @param {number[]} nums
  * @return {number}