Consider a string consisting of the characters < and > only. The string is balanced if each < always appears before (i.e., to the left of) a corresponding > character (they do not need to be adjacent). Moreover, each < and > act as a unique pair of symbols and neither symbol can be considered as part of any other pair of symbols. To balance a string, any > character can be replaced with <>. Given an expression and a maximum number of replacements, determine whether the string can be balanced. Example expressions = ['<<>>', '<>', '<><>';'>>', '<<>', '><><'] maxReplacements = [0, 1, 2, 2, 2, 2] Process a series of expressions and their corresponding maxReplacements. Each of the first three expressions is balanced already. The string expressions[3] = '>>' can be balanced in two moves by replacing each > with a <> to make <><>. Neither of the last two strings can ever be balanced.

Consider a string consisting of the characters < and > only. The string is balanced if each < always appears before (i.e., to the left of) a corresponding > character (they do not need to be adjacent). Moreover, each < and > act as a unique pair of symbols and neither symbol can be considered as part of any other pair of symbols. To balance a string, any > character can be replaced with <>. Given an expression and a maximum number of replacements, determine whether the string can be balanced. Example expressions = ['<<>>', '<>', '<><>';'>>', '<<>', '><><'] maxReplacements = [0, 1, 2, 2, 2, 2] Process a series of expressions and their corresponding maxReplacements. Each of the first three expressions is balanced already. The string expressions[3] = '>>' can be balanced in two moves by replacing each > with a <> to make <><>. Neither of the last two strings can ever be balanced.

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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