✨ [876]

Author: enkr1

876/my_solution.js

@@ -0,0 +1,20 @@
+/**
+ * Definition for singly-linked list.
+ * function ListNode(val, next) {
+ *     this.val = (val===undefined ? 0 : val)
+ *     this.next = (next===undefined ? null : next)
+ * }
+ */
+/**
+ * @param {ListNode} head
+ * @return {ListNode}
+ */
+const middleNode = (head) => {
+  let s = 0, f = 0, sHead = head, fHead = head;
+  while (null !== fHead) {
+    if (null === fHead.next) return sHead;
+    sHead = sHead.next;
+    fHead = fHead.next.next;
+    if (null === fHead) return sHead;
+  }
+};

876/solution.js

@@ -133,7 +133,7 @@ Batch create:
 NOTE: JS IS HERE
 -->
 ```ssh
-chapter=412 && mkdir ./$chapter && touch ./$chapter/my_solution.js && touch ./$chapter/solution.js && alias x="node ./$chapter/my_solution.js"
+chapter=876 && mkdir ./$chapter && touch ./$chapter/my_solution.js && touch ./$chapter/solution.js && alias x="node ./$chapter/my_solution.js"
 ```
 > then you can use `x` for quick debug.