Coding Exercise python #1

Eugine Kang
Aug 28, 2017 · 2 min read

Given an array of 2n integers, your task is to group these integers into n pairs of integer, say (a1, b1), (a2, b2), …, (an, bn) which makes sum of min(ai, bi) for all i from 1 to n as large as possible.

Given a string, you need to reverse the order of characters in each word within a sentence while still preserving whitespace and initial word order.

Given an integer array with even length, where different numbers in this array represent different kinds of candies. Each number means one candy of the corresponding kind. You need to distribute these candies equally in number to brother and sister. Return the maximum number of kinds of candies the sister could gain.

Say you have an array for which the ith element is the price of a given stock on day i.

Design an algorithm to find the maximum profit. You may complete as many transactions as you like (ie, buy one and sell one share of the stock multiple times). However, you may not engage in multiple transactions at the same time (ie, you must sell the stock before you buy again).

Given numRows, generate the first numRows of Pascal’s triangle.

Reverse digits of an integer.

Example1: x = 123, return 321
Example2: x = -123, return -321

Given a string, sort it in decreasing order based on the frequency of characters.

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