Given an Array A consisting of N balls. All the balls are either 'Red' or 'Green'. You can pick 4 balls from the given array(not necessarily consecutive), to form a set. A set of 4 balls is said to be perfect if it contains: 1. Two red followed by two green balls, i.e "RRGG". 2. Two green followed by two red balls, i.e "GGRR" You have to count the number of possible ways of forming a perfect set out of the given balls. roblem Constraints 1 <= |A| <= 105 A, 'R', if ith ball is "Red". A-'G'. if ith ball is "Green". mput Format The first and only argument is string A, which describes the balls in the array.

Given an Array A consisting of N balls. All the balls are either 'Red' or 'Green'. You can pick 4 balls from the given array(not necessarily consecutive), to form a set. A set of 4 balls is said to be perfect if it contains: 1. Two red followed by two green balls, i.e "RRGG". 2. Two green followed by two red balls, i.e "GGRR" You have to count the number of possible ways of forming a perfect set out of the given balls. roblem Constraints 1 <= |A| <= 105 A, 'R', if ith ball is "Red". A-'G'. if ith ball is "Green". mput Format The first and only argument is string A, which describes the balls in the array.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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