摘要：
描述 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. 分析 有序 阅读全文
摘要：
描述 Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in 阅读全文
摘要：
描述 Implement strStr(). Returns the index of the first occurrence of needle in haystack, or 1 if needle is not part of haystack. 分析 设置一个索引index，初始化为0，用 阅读全文