Reverse-Array.py

#Python program to reverse an array:

def reverse_array(arr):

  #Print the original array:
  print(f"The original array is {arr}\n\n")

  #Get the length of the array
  n = len(arr)

  #Define the start and end points
  start = 0
  end = n-1

  #Initialize a variable for iterations
  i = 1

  #Run the following code until start<end
  while(start<end):

    #The following code swaps start and end values
    temp = arr[start]
    arr[start] = arr[end]
    arr[end] = temp

    #Increase the value of start by 1
    start = start+1
    #Decrease the value of end by 1
    end = end-1
  
    #Print the result after each iterations
    print(f"Array after {i} iterations is {arr}")

    #Increase the value of variable i by 1
    i = i+1

  #Return the array
  return arr

#Function call
answer = reverse_array([5,10,15,20,25,30])
print(f"\n\nThe reversed array is {answer}")


######################  Output  ######################
#The original array is [5, 10, 15, 20, 25, 30]


#Array after 1 iterations is [30, 10, 15, 20, 25, 5]
#Array after 2 iterations is [30, 25, 15, 20, 10, 5]
#Array after 3 iterations is [30, 25, 20, 15, 10, 5]


#The reversed array is [30, 25, 20, 15, 10, 5]