3 Lines in C++ using Recursion


  • -1
    ListNode* mergeTwoLists(ListNode* l1, ListNode* l2) {
            if(!l1) return l2;
            if(!l2) return l1;
            return l1->val <= l2->val ? (l1->next = mergeTwoLists(l1->next, l2), l1) : (l2->next = mergeTwoLists(l2->next, l1), l2);
        }

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