Answer to Question #241225 in Algorithms for Selma

Question

Identify the steps you would take to carry out each of the following operations on an array data
structure and then implement an algorithm in pseudocode to solve problem as guided by the steps you
have identified.
2. Write a function deleteLast() that accepts an array and Delete the last element in the array and display
the contents of an array after deletion operation.
3. Find an element x in an array and return the index of x, if found. Otherwise “print element x is not
in the list”.
4. Display the last 3 elements in the array

Answer 1

2. Write a function deleteLast() that accepts an array and Delete the last element in the array and display
the contents of an array after deletion operation.
Answer:
Start function deleteLast(numbers[]):
   for i as integer = arraySize-1 to arraySize do
       numbers[i]=numbers[i+1]
   arraySize=arraySize-1
Stop




3. Find an element x in an array and return the index of x, if found. Otherwise “print element x is not
in the list”.
Answer:


Start function FindElement(numbers[],x):
  for i as integer = 0 to arraySize do
       if numbers[i]==x then
          return i
  Print message: "The element x is not in the list"
  return -1
Stop
4. Display the last 3 elements in the array


Answer:
Start function DisplayLast3Elements(numbers[]):
  for i as integer = arraySize -3 to arraySize do
      Display numbers[i]
Stop