ts-3: added non-null assertions to inform typescript checks

Author: aikhelis

typescript/Linked Lists/palindromic_linked_list.ts

@@ -19,10 +19,10 @@ function palindromicLinkedList(head: LLNode): boolean {
     let ptr1 = head, ptr2 = secondHead;
     let res = true;
     while (ptr2) {
-        if (ptr1.val !== ptr2.val) {
+        if (ptr1!.val !== ptr2.val) {
             res = false;
         }
-        ptr1 = ptr1.next, ptr2 = ptr2.next;
+        ptr1 = ptr1!.next, ptr2 = ptr2.next;
     }
     return res;
 }
@@ -45,8 +45,8 @@ function findMiddle(head: LLNode): LLNode {
     let slow: LLNode = head;
     let fast: LLNode = head;
     while (fast && fast.next) {
-        slow = slow.next;
-        fast = fast.next.next;
+        slow = slow!.next;
+        fast = fast.next!.next;
     }
     return slow;
 }

typescript/Linked Lists/remove_kth_last_node.ts

@@ -28,9 +28,9 @@ function removeKthLastNode(head: LLNode, k: number): LLNode {
     // k nodes behind.
     while (leader.next !== null){
         leader = leader.next;
-        trailer = trailer.next;
+        trailer = trailer!.next;
     }
     // Remove the kth node from the end.
-    trailer.next = trailer.next.next;
+    trailer!.next = trailer!.next!.next;
     return dummy.next;
 }