What is the running time of each of the four methods as a function of the number of values n in the data structure? Explain why

Computer Networking: A Top-Down Approach (7th Edition)
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ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
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What is the running time of each of the four methods as a function of the number of values n in the data structure? Explain why

 

import java.util.*;
class RunningTotal{
private ArrayList<Integer> a = new ArrayList<>();
public void add(int val){
a.add(val);
}
public void remove(){
a.remove(0);
}
public int sum(){
int sum = 0;
for(int i: a)
sum+=i;
return sum;
}
public double average(){
int val = sum();
return val/a.size();
}
}
Transcribed Image Text:import java.util.*; class RunningTotal{ private ArrayList<Integer> a = new ArrayList<>(); public void add(int val){ a.add(val); } public void remove(){ a.remove(0); } public int sum(){ int sum = 0; for(int i: a) sum+=i; return sum; } public double average(){ int val = sum(); return val/a.size(); } }
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