Introduction
Venn Diagram. Complete each of the methods according to name and comments.
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import java.lang.*;
import java.util.*;
import java.lang.Math;
/**
* @author Don Allen
*/
class VennDiagram
{
int[] numbers;
public VennDiagram(int[] n)
{
numbers = n;
}
/*
* @return the number of values in numbers that are divisible by 2
*/
public int numDivisibleBy2()
{
int ans = 0;
for(int i = 0; i<numbers.length; i++)
{
if(numbers[i]%2==0)
{
ans++;
}
}
return ans;
}
/*
* @return the number of values in numbers that are divisible by 3
*/
public int numDivisibleBy3()
{
int ans = 0;
for(int i = 0; i<numbers.length; i++)
{
if(numbers[i]%3==0)
{
ans++;
}
}
return ans;
}
/*
* @return the number of values in numbers that are greater than 50
*/
public int numGreaterThan50()
{
int ans = 0;
for(int i = 0; i<numbers.length; i++)
{
if(numbers[i]>50)
{
ans++;
}
}
return ans;
}
/*
* @return the number of values in numbers that are
* divisible by 2 and divisible by 3
*/
public int numDivisibleBy2AndDivisibleBy3()
{
int ans = 0;
for(int i = 0; i<numbers.length; i++)
{
if(numbers[i]%2==0 && numbers[i]%3==0)
{
ans++;
}
}
return ans;
}
/*
* @return the number of values in numbers that are
* divisible by 2 and greater than 50
*/
public int numDivisibleBy2AndGreaterThan50()
{
int ans = 0;
for(int i = 0; i<numbers.length; i++)
{
if(numbers[i]%2==0 && numbers[i]>50)
{
ans++;
}
}
return ans;
}
/*
* @return the number of values in numbers that are
* divisible by 3 and greater than 50
*/
public int numDivisibleBy3AndGreaterThan50()
{
int ans = 0;
for(int i = 0; i<numbers.length; i++)
{
if(numbers[i]%3==0 && numbers[i]>50)
{
ans++;
}
}
return ans;
}
/*
* @return the number of values in numbers that are
* divisible by 2, divisible by 3 and greater than 50
*/
public int numDivisibleBy2AndDivisibleby3AndGreaterThan50()
{
int ans = 0;
for(int i = 0; i<numbers.length; i++)
{
if(numbers[i]%2==0 &&numbers[i]%3==0 && numbers[i]>50)
{
ans++;
}
}
return ans;
}
}