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This commit is contained in:
wangzeping722 2019-02-12 20:21:57 +08:00
parent d463bdd6e9
commit ca38cf11ac
1 changed files with 4 additions and 5 deletions
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docs/notes/剑指 offer 题解.md
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@ -244,11 +244,10 @@ public String replaceSpace(StringBuffer str) {
```java ```java
public ArrayList<Integer> printListFromTailToHead(ListNode listNode) { public ArrayList<Integer> printListFromTailToHead(ListNode listNode) {
ArrayList<Integer> ret = new ArrayList<>(); if (listNode == null)
if (listNode != null) { return new ArrayList<>();
ret.addAll(printListFromTailToHead(listNode.next)); ArrayList<Integer> ret = printListFromTailToHead(listNode.next);
ret.add(listNode.val); ret.add(listNode.val);
}
return ret; return ret;
} }
``` ```