#  created : 20250125

#  https://www.scientecheasy.com/2022/11/nested-loops-in-python.html/

# Outer for loop.
for x in 1, 2:
    print('Value of x = ',x) # It will execute two times.
  # Inner for loop.
    for y in 1, 2:
        print('Value of y = ',y) # It will execute four times.
print('Nested loops ends here...')

Value of x =  1
Value of y =  1
Value of y =  2
Value of x =  2
Value of y =  1
Value of y =  2
Nested loops ends here...

# Nested While loops in Python

x = 1 # Initialization for outer while loop.
y = 1 # Intialization for the inner while loop.
# Outer while loop.
while x < 3:
    print('Outer while loop') # This statement will execute two times.
  # Inner while loop.
    while y < 3:
        print('Inner while loop') # This statement will execute two times for the first outer loop.
        y = y + 1
    x = x + 1
print('Nested while loops end here...')

Outer while loop
Inner while loop
Inner while loop
Outer while loop
Nested while loops end here...

# Outer for loop.
print('Math table of 2: ')
for x in range(2, 3): # This loop will only repeat 1 time.
    for y in range(1, 11): # Inner for loop will repeat 10 times.
        t = x * y
        print(x,'*',y,'=',t)
    print()
print('Nested for loops ends here...')

Math table of 2: 
2 * 1 = 2
2 * 2 = 4
2 * 3 = 6
2 * 4 = 8
2 * 5 = 10
2 * 6 = 12
2 * 7 = 14
2 * 8 = 16
2 * 9 = 18
2 * 10 = 20

Nested for loops ends here...

x = 1
while x <= 5: # Outer while loop.
    t, y = 1, 1
    print()
    print('Math table for',x,':')
    while y <= 10: # Inner while loop.
        t = x * y
        print(x,'*',y,'=',t)
        y = y + 1
    x = x + 1
print('Nested while loops ends here...')

Math table for 1 :
1 * 1 = 1
1 * 2 = 2
1 * 3 = 3
1 * 4 = 4
1 * 5 = 5
1 * 6 = 6
1 * 7 = 7
1 * 8 = 8
1 * 9 = 9
1 * 10 = 10

Math table for 2 :
2 * 1 = 2
2 * 2 = 4
2 * 3 = 6
2 * 4 = 8
2 * 5 = 10
2 * 6 = 12
2 * 7 = 14
2 * 8 = 16
2 * 9 = 18
2 * 10 = 20

Math table for 3 :
3 * 1 = 3
3 * 2 = 6
3 * 3 = 9
3 * 4 = 12
3 * 5 = 15
3 * 6 = 18
3 * 7 = 21
3 * 8 = 24
3 * 9 = 27
3 * 10 = 30

Math table for 4 :
4 * 1 = 4
4 * 2 = 8
4 * 3 = 12
4 * 4 = 16
4 * 5 = 20
4 * 6 = 24
4 * 7 = 28
4 * 8 = 32
4 * 9 = 36
4 * 10 = 40

Math table for 5 :
5 * 1 = 5
5 * 2 = 10
5 * 3 = 15
5 * 4 = 20
5 * 5 = 25
5 * 6 = 30
5 * 7 = 35
5 * 8 = 40
5 * 9 = 45
5 * 10 = 50
Nested while loops ends here...

# Outer for loop.
print('Multiplication tables from 1 to 5: ')
for x in range(1, 6):
    for y in range(1, 11): # Inner for loop.
        t = x * y
        print(t, end=' ')
    print()
print('Nested for loops ends here...')

Multiplication tables from 1 to 5: 
1 2 3 4 5 6 7 8 9 10 
2 4 6 8 10 12 14 16 18 20 
3 6 9 12 15 18 21 24 27 30 
4 8 12 16 20 24 28 32 36 40 
5 10 15 20 25 30 35 40 45 50 
Nested for loops ends here...

# Outer for loop.
print('Displaying a triangle of *: ')
for x in range(1, 6):
    for y in range(1, x + 1): # Inner for loop.
        print('* ',end='')
    print()
print('Loops end here...')

Displaying a triangle of *: 
* 
* * 
* * * 
* * * * 
* * * * * 
Loops end here...

# Outer for loop.
print('Displaying a triangle of numbers: ')
for x in range(1, 6):
    for y in range(1, x + 1): # Inner for loop.
        print(y,' ',end='')
    print()
print('Loops end here...')

Displaying a triangle of numbers: 
1  
1  2  
1  2  3  
1  2  3  4  
1  2  3  4  5  
Loops end here...

print('Displaying a right triangle pattern of numbers: ')
z = 1
for x in range(1, 6):
    for y in range(1, x + 1): # Inner for loop.
        print(z,' ',end='')
    z += 1
    print()
print('Loops end here...')

Displaying a right triangle pattern of numbers: 
1  
2  2  
3  3  3  
4  4  4  4  
5  5  5  5  5  
Loops end here...

# Outer for loop.
for x in range(6, 1, -1):
    for y in range(1, x): # Inner for loop.
        print(y,' ',end='')
    print()
print('Loops end here...')

1  2  3  4  5  
1  2  3  4  
1  2  3  
1  2  
1  
Loops end here...

print("Displaying a right triangle of characters ")
# Outer for loop.
for x in range(65, 70):
    for y in range(65, x + 1): # Inner for loop.
        print(chr(y),' ',end='')
    print()
print('Loops end here...')

Displaying a right triangle of characters 
A  
A  B  
A  B  C  
A  B  C  D  
A  B  C  D  E  
Loops end here...

print("Displaying a reverse right triangle of characters ")
# Outer for loop.
for x in range(70, 65, -1):
    for y in range(65, x): # Inner for loop.
        print(chr(y),' ',end='')
    print()
print('Loops end here...')

Displaying a reverse right triangle of characters 
A  B  C  D  E  
A  B  C  D  
A  B  C  
A  B  
A  
Loops end here...

# Python program to find the sum of series.
import math # Using this module, we will call pow() function.
x = int(input('Enter the value of x: '))
n = int(input('Enter the value of n: '))
S = 1.0 + x
term = 1
count = 1
while count <= n: # Outer while loop.
    power = math.pow(x, count)
    fact = 1
    for i in range(1, count + 1): # Inner for loop.
        fact = fact * 1
    S = S + (power/count)
    count = count + 1
print('Sum of the series = %.2f'%S)

Enter the value of x:  5
Enter the value of n:  6


Sum of the series = 3450.58