Java - Array methods assignment

Objective(s)

• You will be able to create a class comprised of static methods
• You will be able to define static methods
• You will be able to use/call static methods
• You will be able to implement various array algorithms
  • printing an array
  • generating a random array
  • sum all the elements
  • finding the minimum
  • finding the maximum
  • finding any element

Directions

1. Open NetBeans and create a new project named ArrayMethodsProject
2. Create a new class file named ArrayMethods.java (it should not contain a main() method)
3. Define the following methods:
   • void print(int[] intArray)
     • Traverse the array and print out each element on one long line
   • int[] generateRandom(int size, int lower, int upper)
     • Within this method, you will create a new array of size length. You will populate it with random integers that range from lower to upper. Return the array
   • int sum(int[] intArray)
     • Traverse the array and sum all the elements. Return the sum.
   • int min(int[] intArray)
     • Traverse the array and find the smallest element. Return the minimum
     • Hint: Create a variable to "remember" the minimum as you traverse the array. If the current element is smaller than your minimum, then update the minimum to the new element
   • int max(int[] intArray)
     • Traverse the array and find the largest element. Return the maximum
     • Hint: This algorithm is almost identical to finding the minimum
   • int indexOf(int[] intArray, int key)
     • Traverse the intArray and check if any elements in the array match key. If so, return the index of the match, otherwise, return -1 if there is no match.

Testing ArrayMethods

1. Create a new Java class with a main() method
2. Within the main() method, use the ArrayMethods to create an array and test out each of your methods

//Example:
int[] randomNums = ArrayMethods.generateRandom(10, 0, 100);
ArrayMethods.print(randomNums);