Reverse pyramid pattern in Python

Here, you will learn different Python programs to print the reverse pyramid pattern. This type of logical question is generally asked in interviews or examinations. This can help you to improve your logical programming skills, which can be useful in game development and other logical application development. 

The following Python program prints a reverse pyramid pattern made up of stars up to the specified n lines. In this Python program, we take a row number as input from the user. Here the row demonstrates the number of lines that will be printed in the reverse triangle shape.

# Get range of the reverse pyramid
n = int(input("Enter the range: \t "))

# outer loop over the range 
for rows in range(n, 0, -1):
# Inner loop to create gap
    for columns in range(0, n-rows):
        print(end=" ")
# Inner loop to print star
    for columns in range(0, rows):
        print("*", end=" ")
    print()

Enter the range: 	 10
* * * * * * * * * * 
 * * * * * * * * * 
  * * * * * * * * 
   * * * * * * * 
    * * * * * * 
     * * * * * 
      * * * * 
       * * * 
        * * 
         * 

Reverse pyramid character pattern in Python

The given Python program prints the reverse pyramid character pattern.

# Print reverse character
# Pyramid pattern

def reverse_pyramid( n ):
     
    # outer loop to deal with number
    # number of rows 
    for i in range(n, 0, -1):
         
        # inner loop
        # create right triangle gaps
        # on the left side of pyramid
        for gap in range(n-1, i-1, -1):
            print(" ", end = '')
            print(" ", end = '')
         
        # initializing character value
        ch = ord('A')
         
        # Print characters on
        # left side of pyramid
        for x in range(1, i+1):
            print(chr(ch), end = ' ')
            ch += 1
             
        # Print characters on
        # right side of pyramid
        for y in range(i - 1, -1, -1):
            ch -= 1
            print(chr(ch), end = ' ')
         
        print("\n", end = '')
 

n = int(input("Enter the range: \t "))
reverse_pyramid(n)

Enter the range: 	 10
A B C D E F G H I J J I H G F E D C B A 
  A B C D E F G H I I H G F E D C B A 
    A B C D E F G H H G F E D C B A 
      A B C D E F G G F E D C B A 
        A B C D E F F E D C B A 
          A B C D E E D C B A 
            A B C D D C B A 
              A B C C B A 
                A B B A 
                  A A 

Reverse pyramid number pattern in Python

The following Python program prints the reverse pyramid number pattern. We have used the reversed loop to print the downward inverted pyramid where the number is reduced after each iteration.

# Print reverse number
# Pyramid pattern

rows = int(input("Enter the number of rows: "))  
k = 0  

# Reversed loop for downward inverted pattern  
for i in range(rows, 0, -1):  
    k += 1  
    for j in range(0, rows-i):
        print(end=" ")
    for j in range(1, i + 1):  
        print(k, end=' ')  
    print()  

Enter the number of rows: 6
1 1 1 1 1 1 
 2 2 2 2 2 
  3 3 3 3 
   4 4 4 
    5 5 
     6

Reverse pyramid pattern in descending order of number in Python

The following Python program prints the reverse pyramid number pattern in descending order. We have used the reversed loop to print the downward inverted pyramid where number reduced after each iteration.

rows = int(input("Enter the number of rows: "))  
k = 0  

# Reversed loop for downward inverted pattern  
for i in range(rows, 0, -1):  
    n = i 
    for j in range(0, rows-i):
        print(end=" ")
    for j in range(0, i):  
        # print reduced value in each new line  
        print(n, end=' ')      
    print()  

Enter the number of rows: 10
10 10 10 10 10 10 10 10 10 10 
 9 9 9 9 9 9 9 9 9 
  8 8 8 8 8 8 8 8 
   7 7 7 7 7 7 7 
    6 6 6 6 6 6 
     5 5 5 5 5 
      4 4 4 4 
       3 3 3 
        2 2 
         1 

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