leetcode 24. Swap Nodes in Pairs
2016-06-21 15:38
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class Solution { public: ListNode* swapPairs(ListNode* head) { ListNode * cur = head; while(cur!=NULL && cur->next!=NULL){ int tmp = cur->val; cur->val = cur->next->val; cur->next->val = tmp; cur = cur->next->next; } return head; } };
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