Fixing the size getter leads to infinite loop.

2019-03-11 23:12:30 +08:00 · 2019-03-11 23:12:30 +08:00 · cf40a77268
commit cf40a77268
parent e0cd3f758d
1 changed files with 3 additions and 1 deletions
--- a/swift/08_stack/StackBasedOnLinkedList.swift
+++ b/swift/08_stack/StackBasedOnLinkedList.swift
@ -14,8 +14,10 @@ struct StackBasedOnLinkedList<Element>: Stack {
    
    var size: Int {
        var count = 0
-        while head.next != nil {
+        var cur = head.next
+        while cur != nil {
            count += 1
+            cur = cur?.next
        }
        return count
    }