摘要:
一、关于卡特兰数 卡特兰数是一种经典的组合数,经常出现在各种计算中,其前几项为 : 1, 2, 5, 14, 42, 132, 429, 1430, 4862, 16796, 58786, 208012, 742900, 2674440, 9694845, 35357670, 129644790, 阅读全文
摘要:
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. 合并两个排好序的 阅读全文