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Lec7.java
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Lec7.java
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/*
AGENDA: To learn about methods/functions
*/
class Lec7{
public static void printName(String name)
{
System.out.println(name);
return; //wherever you are, just come out of that block.
}
static int factorial(int n)
{
int fact=1;
for(int i=1;i<=n;i++)
{
fact=fact*i;
}
return fact;
}
static void change(int[] arr)
{
arr[0]=99;
}
public static void main(String[] args)
{
printName("Prakhar Sinha"); //function calling
int factor;
factor=factorial(5);
System.out.println(factor);
int[] nums={3,5,2,7,8};
for(int i=0;i<nums.length;i++)
{
System.out.print(nums[i]+" ");
}
System.out.println();
change(nums); //copy of this refernce variable(num) is passed into function. So, now both arr and num are pointing to the same object
for(int i=0;i<nums.length;i++)
{
System.out.print(nums[i]+" ");
}
}
}