loops practice in python

# PATTERN 1: Simple Right-Angled Triangle (Stars)
# - Outer loop (i) controls the rows (1 to n).
# - Inner loop (j) controls the columns/stars in each row (1 to i).


print("Simple Star Triangle")
n = 5

for i in range(1, n + 1):          # Row loop
    for j in range(1, i + 1):      # Column loop prints 'i' stars per row
        print("*", end=" ")        # end=" " prevents going to a new line
    print()                        # Moves cursor to the next line after row ends

print("\n" + "="*40 + "\n")



# PATTERN 2: Inverted Right-Angled Triangle (Stars)
# - Row loop starts from max 'n' and goes down to 1 using step -1.
# - Inner loop prints stars matching the decreasing row number.

print("Inverted Star Triangle")

for i in range(n, 0, -1):          # Rows go: 5, 4, 3, 2, 1
    for j in range(1, i + 1):      # Prints stars equal to current row 'i'
        print("*", end=" ")
    print()

print("\n" + "="*40 + "\n")


# PATTERN 3: Number Triangle (Row Number Pattern)
# - Instead of printing a fixed star (*), print the row number 'i'.
# - It repeats the current row number 'i' times.

print("Number Triangle (Repeating Row)")

for i in range(1, n + 1):          # Row loop
    for j in range(1, i + 1):      # Column loop
        print(i, end=" ")          # Print row number instead of '*'
    print()

print("\n" + "="*40 + "\n")


# PATTERN 4: Centered Pyramid Star Pattern
# - We need two things per row: Leading spaces and Stars.
# - Spaces decrease as rows increase: (n - i) spaces.
# - Stars increase: 'i' stars separated by spaces.

print("Centered Pyramid Star Pattern")

for i in range(1, n + 1):
    # Print spaces to center-align the triangle
    print(" " * (n - i), end="")
    # Print stars with a space after each star
    print("* " * i)

print("\n" + "="*40 + "\n")


# PATTERN 5: Floyd's Triangle (Continuous Numbers)
# - Keep a separate counter variable starting at 1.
# - Increment the counter continuously across rows without resetting.

print("Floyd's Triangle (Consecutive Numbers)")

current_number = 1                 # Track continuous numbers

for i in range(1, n + 1):
    for j in range(1, i + 1):
        print(current_number, end=" ")
        current_number += 1        # Increment so numbers keep growing (1, 2, 3...)
    print()