455\. Assign Cookies

Easy

Assume you are an awesome parent and want to give your children some cookies. But, you should give each child at most one cookie.

Each child `i` has a greed factor `g[i]`, which is the minimum size of a cookie that the child will be content with; and each cookie `j` has a size `s[j]`. If `s[j] >= g[i]`, we can assign the cookie `j` to the child `i`, and the child `i` will be content. Your goal is to maximize the number of your content children and output the maximum number.

**Example 1:**

**Input:** g = [1,2,3], s = [1,1]

**Output:** 1

**Explanation:**

    You have 3 children and 2 cookies. The greed factors of 3 children are 1, 2, 3.
    And even though you have 2 cookies, since their size is both 1, you could only make the child whose greed factor is 1 content.
    You need to output 1.

**Example 2:**

**Input:** g = [1,2], s = [1,2,3]

**Output:** 2

**Explanation:**

    You have 2 children and 3 cookies. The greed factors of 2 children are 1, 2.
    You have 3 cookies and their sizes are big enough to gratify all of the children,
    You need to output 2.

**Constraints:**

*   <code>1 <= g.length <= 3 * 10<sup>4</sup></code>
*   <code>0 <= s.length <= 3 * 10<sup>4</sup></code>
*   <code>1 <= g[i], s[j] <= 2<sup>31</sup> - 1</code>