# 归档 2017年2月

## 题目描述：

LeetCode 518. Coin Change 2

You are given coins of different denominations and a total amount of money. Write a function to compute the number of combinations that make up that amount. You may assume that you have infinite ...

## 题目描述：

LeetCode 516. Longest Palindromic Subsequence

Given a string s, find the longest palindromic subsequence's length in s. You may assume that the maximum length of s is 1000.

Example 1:
Input:

```"bbbab"
```

Output:

```4
```

One possible longest palindromic subsequence ...

## LeetCode Weekly Contest 19解题报告 作者是 在线疯狂 发布于 2017年2月12日 在 LeetCode.

LeetCode Weekly Contest 19是LeetCode举办的第二十四场正式周赛，共4道题目，比赛时长1.5小时。

LeetCode 504. Base 7

LeetCode 513. Find Left Most Element

LeetCode 515. Find Largest Element in Each Row

LeetCode 493. Reverse Pairs

## 题目描述：

LeetCode 493. Reverse Pairs

Given an array `nums`, we call `(i, j)` an important reverse pair if `i < j` and `nums[i] > 2*nums[j]`.

You need to return the number of important reverse pairs in the ...

## 题目描述：

LeetCode 515. Find Largest Element in Each Row

You need to find the largest value in each row of a binary tree.

Example:

```Input:

1
/ \
3   2
/ \   \
5   3   9

Output: [1, 3, 9]
```