LeetCode Online Judge 题目C# 练习 - Merge Two Sorted Lists
Merge two sorted linked lists and return it as a new list. The new list should be made by splicing together the nodes of the first two lists.
1 public static ListNode MergeTwoSortedLists(ListNode A, ListNode B) 2 { 3 if (A == null) 4 return B; 5 if (B == null) 6 return A; 7 8 ListNode ret; 9 ListNode curr; 10 11 if (A.val <= B.val) 12 { 13 ret = A; 14 A = A.next; 15 } 16 else 17 { 18 ret = B; 19 B = B.next; 20 } 21 22 curr = ret; 23 24 while (A != null || B != null) 25 { 26 if (A == null) 27 { 28 curr.next = B; 29 B = B.next; 30 curr = curr.next; 31 continue; 32 } 33 if (B == null) 34 { 35 curr.next = A; 36 A = A.next; 37 curr = curr.next; 38 continue; 39 } 40 if (A.val <= B.val) 41 { 42 curr.next = A; 43 A = A.next; 44 curr = curr.next; 45 continue; 46 } 47 else 48 { 49 curr.next = B; 50 B = B.next; 51 curr = curr.next; 52 continue; 53 } 54 } 55 56 return ret; 57 }
代码分析：
最最基本的题了，什么都没考。。。BF,O(n).
