Array/Lists Examples(Python)

Example : A Python Example to store and display all Static Values in an Array or Lists.

list1 = [10, 20, 30, 40, 50] # This is the List of integers.

print(list1[0]) # Accessing the first element of list.
print(list1[2]) # Accessing the third element of list.

print(list1)

Output:
10
30
[10, 20, 30, 40, 50]

--------------- OR ---------------

animals = ["Lion", "Tiger", "Dogs", "Cows", "Cats"]
x = animals[0]
y = animals[3]
print(x,y)

print("\n")
print(animals)

Output:
Lion Cows
['Lion', 'Tiger', 'Dogs', 'Cows', 'Cats']

--------------- OR ---------------

animals = ["Lion", "Tiger", "Dogs", "Cows", "Cats"]
for x in animals:
  print(x)

Output:
Lion
Tiger
Dogs
Cows
Cats

--------------- OR ---------------

animals = ["Lion", "Tiger", "Dogs", "Cows", "Cats"]
for x in animals:
  print(x, end=" ")

Output:
 Lion Tiger Dogs Cows Cats

--------------- OR ---------------

list1 = [10, 200.32, "Rose", 40, "Tomato"] # This is the List of Data.

print(list1[0]) # Accessing the first element of list.
print(list1[1]) # Accessing the second element of list.
print(list1[2]) # Accessing the third element of list.

print(list1)

Output:
10
200.32
Rose
[10, 200.32, 'Rose', 40, 'Tomato'] 

Example : Write a program in  Python to find out the Length of an Array or Lists.

animals = ["Lion", "Tiger", "Dogs", "Cows", "Cats"]
x = len(animals)
print("The length of Array is = ",x)
print("The length of Array is = ",len(animals))

Output:
The length of Array is =  5
The length of Array is =  5

Example : A Python program to Add a new element in the last of an Array or Lists.

animals = ["Lion", "Tiger", "Dogs", "Cows", "Cats"]
for x in animals:
  print(x, end=" ")

animals.append("Goat")    # Add new element at the end
print("\n")
for x in animals:
  print(x, end=" ")

Output:
Lion Tiger Dogs Cows Cats 

Lion Tiger Dogs Cows Cats Goat 

--------------- OR ---------------

number = [10, 25, 58, 4, 85]
for x in number:
  print(x, end=" ")

number.insert(2, 232)      # add new item(232) at specific location(2)
number.insert(4, "Mango")
print("\n")
for x in number:
  print(x, end=" ")

Output:
10 25 58 4 85 

10 25 232 58 Mango 4 85 

Example : A program in Python to Delete/Remove Specific Elements from an Array or Lists.

animals = ["Lion", "Tiger", "Dogs", "Cows", "Cats"]
for x in animals:
  print(x, end=" ")

animals.pop(1)

print("\n")
for x in animals:
  print(x, end=" ")

animals.remove("Cows")

print("\n")
for x in animals:
  print(x, end=" ")

Output:
Lion Tiger Dogs Cows Cats 

Lion Dogs Cows Cats 

Lion Dogs Cats 

Example : Write a Python program to Sort the elements in an Array or Lists.

number = [10, 25, 58, 4, 85]
for x in number:
  print(x, end=" ")

# number.sort()   sort the list in Ascending order
number.sort(reverse=False)      # sort the list in Ascending order
print("\n")
for x in number:
  print(x, end=" ")

number.sort(reverse=True)      # sort the list in Descending order
print("\n")
for x in number:
  print(x, end=" ")

Output:
10 25 58 4 85 

4 10 25 58 85 

85 58 25 10 4

Example : A Python program to display the Sum of Array Values. 

sum=0
number = [10, 25, 58, 4, 85]
for x in number:  
 sum=sum+x  
print(sum)

Output:
182

-----------  OR  ------------

sum=0
i=0
number = [10, 25, 58, 4, 85]
for x in number:  
 print(number[i],end=" ")
 sum=sum+x
 i=i+1
print("\n")
print(sum)

Output:
10 25 58 4 85 

182

-----------  OR  ------------

# Initialize sum to 0
sum = 0

# Loop through the first 10 natural numbers (1 to 10)
for num in range(1, 11):
    sum=sum + num  # Add the current number to the sum

print("The sum of the first 10 natural numbers is:", sum)

Output:
The sum of the first 10 natural numbers is: 55

Example : A program to Reverse the elements of an Array or Lists of Python.

number = [10, 25, 58, 4, 85]
for x in number:
  print(x, end=" ")

number.reverse()      # reverse the list
print("\n")
for x in number:
  print(x, end=" ")

Output:
10 25 58 4 85 

85 4 58 25 10

Example : A program in Python to find out the index location of a specific element of an Array or List.

number = [10, 25, 58, 4, 85]

x = number.index(58)  # gives the first occurrence of index value of an item
print(x, end=" ")

Output:
2

Example : Write a program to count the no. of specific elements present in an Array or Lists in Python.

number = [10, 25, 58, 14, 85, 10, 10]

x = number.count(10)      # counts the no. of specific items present in the list.

x = number.count(5)
print(x, end=" ")

Output:
3
0

Example : Solve program in Python to Copy all the elements from an array and copy into another and display it.

number = [10, 25, 58, 4, 85]
for x1 in number:
  print(x1, end=" ")

y = number.copy()      # copy the list
print("\n")
for x2 in y:
  print(x2, end=" ")

Output:
10 25 58 4 85 

10 25 58 4 85 

Example : A Python program to Clear/Empty all the elements of an array.

number = [10, 25, 58, 4, 85]
for x1 in number:
  print(x1, end=" ")

number.clear()      # remove all the items from the list
print("\n")
for x2 in number:
  print(x2, end=" ")

Output:
10 25 58 4 85

Example : A Python program to Append All the Elements into another array.

number1 = [10, 25, 58, 24, 85]
number2 = [200, 302, 760, 525, 650]
for x1 in number1:
  print(x1, end=" ")

print("\n")
for x2 in number2:
  print(x2, end=" ")

number1.extend(number2)  # Adds one array into another

print("\n")
for x3 in number1:
  print(x3, end=" ")

Output:
10 25 58 24 85 

200 302 760 525 650 

10 25 58 24 85 200 302 760 525 650 

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