13. Roman to Integer

Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M.

leetcode35

给定一个排序数组和一个目标值，在数组中找到目标值，并返回其索引。如果目标值不存在于数组中，返回它将会被按顺序插入的位置。

你可以假设数组中无重复元素。

1.Two Sum

desc

Given an array of integers, return indices of the two numbers such that they add up to a specific target.

You may assume that each input would have exactly one solution, and you may not use the same element twice.