Buttercola

A message containing letters from A-Z is being encoded to numbers using the following mapping way: 'A' -> 1 'B' -> 2 ....

You are given a list of non-negative integers, a1, a2, ..., an, and a target, S. Now you have 2 symbols  +  and  - . For each integer, you s...

Given an array  arr  of positive integers, consider all binary trees such that: Each node has either 0 or 2 children; The values of  arr  co...

Given a list of daily  temperatures , produce a list that, for each day in the input, tells you how many days you would have to wait until a...

Given a balanced parentheses string  S , compute the score of the string based on the following rule: ()  has score 1 AB  has score  A + B ,...

Given a circular array (the next element of the last element is the first element of the array), print the Next Greater Number for every ele...

You are given two integer arrays  nums1  and  nums2  both of  unique  elements, where  nums1  is a subset of  nums2 . Find all the next grea...

Write a class  StockSpanner  which collects daily price quotes for some stock, and returns the  span  of that stock's price for the curr...

You have one chocolate bar that consists of some chunks. Each chunk has its own sweetness given by the array sweetness. You want to share th...

At the weekend, Xiao Q and his friends came to the big city for shopping. There are many tall buildings.There are  n  tall buildings in a ro...

A string, each character representing a scene. Between two identical characters is considered to be a continuous scene. For example:  abcda ...

Description 中文 Given some intervals, ask how many are covered most, if there are multiple, output the smallest number. the number of the int...