Logic Building/Phase 2 - Level 4: Pattern Printing/Program

Number Pattern 1

Print number pattern: 1, 12, 123, ...

Logic BuildingIntermediate

Logic Building

# Take n
n = int(input("Enter number of rows: "))

# Print pattern
for i in range(1, n + 1):
    for j in range(1, i + 1):
        print(j, end="")
    print()

Output

Enter number of rows: 4
1
12
123
1234

Print numbers from 1 to i in each row.

Key Concepts:

Outer loop: rows
Inner loop: print j from 1 to i
Sequential numbers

Print Pyramid Pattern

Number Pattern 2