Python Program Print Hollow Diamond Star Pattern

Python Program Print Hollow Diamond Star Pattern-

Python Program Print Hollow Diamond Star Pattern

# Number of rows
row = 7

# this code will print upper part of hollow diamond pattern
for i in range(1, row+1):
    for j in range(1,row-i+1):
        print(" ", end="")
    for j in range(1, 2*i):
        if j==1 or j==2*i-1:
            print("*", end="")
        else:
            print(" ", end="")
    print()

# now print Lower part of hollow diamond shape
for i in range(row-1,0, -1):
    for j in range(1,row-i+1):
        print(" ", end="")
    for j in range(1, 2*i):
        if j==1 or j==2*i-1:
            print("*", end="")
        else:
            print(" ", end="")
    print()

This code is used to print a hollow diamond shape made of asterisks (*) and spaces. Here’s an explanation of the code:

1. row = 7: This line defines the variable row and sets it to 7, which determines the number of rows in the diamond. You can change this value to create a diamond of a different size.
2. The code uses two loops: one for the upper part of the diamond and another for the lower part.
3. for i in range(1, row+1): This loop iterates from 1 to the specified number of rows (inclusive) for the upper part of the diamond.
4. for j in range(1, row-i+1): This loop prints leading spaces before the asterisks in each row. It calculates the number of spaces based on the current row i to create the shape of the diamond.
5. for j in range(1, 2*i): This loop prints the asterisks and spaces within each row. It iterates from 1 to 2*i. If j is equal to 1 or 2*i-1, it prints an asterisk, and for all other values of j, it prints a space to create the hollow effect.
6. The if j==1 or j==2*i-1 condition is used to print an asterisk at the beginning and end of each row while leaving spaces in the middle.
7. print(): This is used to move to the next line to start the next row.
8. After the upper part of the diamond is printed, there’s another loop for the lower part of the diamond:
   • for i in range(row-1, 0, -1): This loop iterates from row-1 down to 1 for the lower part of the diamond.
   • The structure of this loop is similar to the upper part, printing leading spaces, asterisks, and spaces to create the hollow effect.

This code results in a diamond shape made of asterisks with a hollow center. The center is left empty with spaces. You can adjust the row variable to change the size of the diamond.