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These code cannot be judged successfully #26

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a87b050
021 fix: if one of the given lists is null
Apr 25, 2019
f1c5a62
021 fix: if one of the given lists is null
Apr 25, 2019
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021 fix: if one of the given lists is null
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Li Beibei committed Apr 25, 2019
commit f1c5a624b7afdf4b6f53dfc3fba00efa8fc9cba7
5 changes: 5 additions & 0 deletions note/021/README.md
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,11 @@ class Solution {
public ListNode mergeTwoLists(ListNode l1, ListNode l2) {
ListNode head = new ListNode(0);
ListNode temp = head;
if (l1 == null) {
return l2;
} else if (l2 == null) {
return l1;
}
while (l1 != null && l2 != null) {
if (l1.val < l2.val) {
temp.next = l1;
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