You are given a sting 5 of length N Qranges of the form R in a 20 array range and a permutation ar containing numbers from 1 to N Task In one operation, you remove the fist unremoved character as per the permutation However, the positions of other characters will not change. Determine the minimum number of operations for the remaining sting to be good Notes A string is considered good if all the Q ranges have all distinct characters Removed characters are not counted A range with all characters removed is considered to have all distinct characters • The sequence of n integers is called a permutation if it contains all integers from 1 to n exactly once 1based indexing is followed Example Assumptions: N=5,Q-2,S="aaaaa" arr-[2, 4, 1, 3, 5] ranges=[[21],[4.5]] Approach: 1.After the first operation, the string becomes a_ada 2.After the second operation, the string becomes a_a_a 3.Now, in both ranges, all characters are distinct. Hence, the output is 2 Function description: Complete the goodString function provided in the editor. This function takes the following 6 parameters and returns the minimum number of operations: 1.N: Represents the length of the string 2.S: Represents the string 3.arr :Represents the permutation according to which characters will be removed 4.Q: Represents the number of ranges 5. ranges: Represents an array of 2 integer arrays describing the ranges[ L, R] which should have all distinct characters. Input format Note: This is the input format that you must use to provide custom input (available above the Compile and Test button). • The first line contains a single integer 7 denoting the number of test cases. Talso specifies the number of times you have to run the goodString function on a different set of inputs. For each test case: The first line contains 2 space-separated integers N and Q The second line contains the string S The third line contains N space-separated integers denoting the permutation ar Each of the Q following lines contains 2 space-separated integers describing the range, Land R Output format For each test case, print a single integer in a single line denoting the minimum number of operations required for the remaining string to be good Explanation The first line contains the number of test cases, T-1 The first test case Given 2 N-8, Q-3, S="abbabaab arr-16, 3, 5, 14, 2, 7, 8 ranges=[[1, 3], [4. 71. 13. 51 Approach After the first operation, the string becomes abbab_ab • After the second operation, the string becomes ab_ab_ab After the third operation, the string becomes ab_a_ab After the fourth operation, the string becomes ba After the fifth operation, the string becomes b ab ab Now, in all the ranges, all characters are distinct Hence, the output is 5 Sample input 1 5 3 4 aci 3 1 2 1 1 1 2 1 3 2 2 9 3 irjclepku 4 1 5 8 6 2 9 7 3 5 6 9 9 6 9 1 5 o 1 1 1 1 1 1 1 1 1 1 1 4 4 bjdy 3 4 2 1 3 3 3 4 3 4 4 4 9 2 cajxlkavs 4 1 5 8 6 2 9 7 3 6 9 9 9 Sample output 1 0 0 0 0 0

You are given a sting 5 of length N Qranges of the form R in a 20 array range and a permutation ar containing numbers from 1 to N Task In one operation, you remove the fist unremoved character as per the permutation However, the positions of other characters will not change. Determine the minimum number of operations for the remaining sting to be good Notes A string is considered good if all the Q ranges have all distinct characters Removed characters are not counted A range with all characters removed is considered to have all distinct characters • The sequence of n integers is called a permutation if it contains all integers from 1 to n exactly once 1based indexing is followed Example Assumptions: N=5,Q-2,S="aaaaa" arr-[2, 4, 1, 3, 5] ranges=[[21],[4.5]] Approach: 1.After the first operation, the string becomes a_ada 2.After the second operation, the string becomes a_a_a 3.Now, in both ranges, all characters are distinct. Hence, the output is 2 Function description: Complete the goodString function provided in the editor. This function takes the following 6 parameters and returns the minimum number of operations: 1.N: Represents the length of the string 2.S: Represents the string 3.arr :Represents the permutation according to which characters will be removed 4.Q: Represents the number of ranges 5. ranges: Represents an array of 2 integer arrays describing the ranges[ L, R] which should have all distinct characters. Input format Note: This is the input format that you must use to provide custom input (available above the Compile and Test button). • The first line contains a single integer 7 denoting the number of test cases. Talso specifies the number of times you have to run the goodString function on a different set of inputs. For each test case: The first line contains 2 space-separated integers N and Q The second line contains the string S The third line contains N space-separated integers denoting the permutation ar Each of the Q following lines contains 2 space-separated integers describing the range, Land R Output format For each test case, print a single integer in a single line denoting the minimum number of operations required for the remaining string to be good Explanation The first line contains the number of test cases, T-1 The first test case Given 2 N-8, Q-3, S="abbabaab arr-16, 3, 5, 14, 2, 7, 8 ranges=[[1, 3], [4. 71. 13. 51 Approach After the first operation, the string becomes abbab_ab • After the second operation, the string becomes ab_ab_ab After the third operation, the string becomes ab_a_ab After the fourth operation, the string becomes ba After the fifth operation, the string becomes b ab ab Now, in all the ranges, all characters are distinct Hence, the output is 5 Sample input 1 5 3 4 aci 3 1 2 1 1 1 2 1 3 2 2 9 3 irjclepku 4 1 5 8 6 2 9 7 3 5 6 9 9 6 9 1 5 o 1 1 1 1 1 1 1 1 1 1 1 4 4 bjdy 3 4 2 1 3 3 3 4 3 4 4 4 9 2 cajxlkavs 4 1 5 8 6 2 9 7 3 6 9 9 9 Sample output 1 0 0 0 0 0

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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**Must attach editable code and output screenshot** You are given a sting 5 of length N Qranges of the form R in a 20 array range and a permutation ar containing numbers from 1 to N Task In one operation, you remove the fist unremoved character as per the permutation However, the positions of other characters will not change. Determine the minimum number of operations for the remaining sting to be good Notes A string is considered good if all the Q ranges have all distinct characters Removed characters are not counted A range with all characters removed is considered to have all distinct characters • The sequence of n integers is called a permutation if it contains all integers from 1 to n exactly once 1based indexing is followed Example Assumptions: N=5,Q-2,S="aaaaa" arr-[2, 4, 1, 3, 5] ranges=[[21],[4.5]] Approach: 1.After the first operation, the string becomes a_ada 2.After the second operation, the string becomes a_a_a 3.Now, in both ranges, all characters are distinct. Hence, the output is 2 Function description: Complete the goodString function provided in the editor. This function takes the following 6 parameters and returns the minimum number of operations: 1.N: Represents the length of the string 2.S: Represents the string 3.arr :Represents the permutation according to which characters will be removed 4.Q: Represents the number of ranges 5. ranges: Represents an array of 2 integer arrays describing the ranges[ L, R] which should have all distinct characters. Input format Note: This is the input format that you must use to provide custom input (available above the Compile and Test button). • The first line contains a single integer 7 denoting the number of test cases. Talso specifies the number of times you have to run the goodString function on a different set of inputs. For each test case: The first line contains 2 space-separated integers N and Q The second line contains the string S The third line contains N space-separated integers denoting the permutation ar Each of the Q following lines contains 2 space-separated integers describing the range, Land R Output format For each test case, print a single integer in a single line denoting the minimum number of operations required for the remaining string to be good Explanation The first line contains the number of test cases, T-1 The first test case Given 2 N-8, Q-3, S="abbabaab arr-16, 3, 5, 14, 2, 7, 8 ranges=[[1, 3], [4. 71. 13. 51 Approach After the first operation, the string becomes abbab_ab • After the second operation, the string becomes ab_ab_ab After the third operation, the string becomes ab_a_ab After the fourth operation, the string becomes ba After the fifth operation, the string becomes b ab ab Now, in all the ranges, all characters are distinct Hence, the output is 5 Sample input 1 5 3 4 aci 3 1 2 1 1 1 2 1 3 2 2 9 3 irjclepku 4 1 5 8 6 2 9 7 3 5 6 9 9 6 9 1 5 o 1 1 1 1 1 1 1 1 1 1 1 4 4 bjdy 3 4 2 1 3 3 3 4 3 4 4 4 9 2 cajxlkavs 4 1 5 8 6 2 9 7 3 6 9 9 9 Sample output 1 0 0 0 0 0

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