#0215

Increasing Number Triangle

EasyPython15 min10 XP

Problem

For n, return a list of strings for the number triangle: first row "1", second row "12", and so on.

Why This Matters

Number patterns check whether loop indexes map correctly to visible output.

Function Signature

def number_triangle(n):

Examples

Example 1

Inputn = 4

Output["1", "12", "123", "1234"]

Row 4 contains numbers 1 through 4 joined together.

Constraints

Return the exact requested value.
Handle small edge cases cleanly.
Prefer readable Python over clever shortcuts.

CodePython

def number_triangle(n):
    """
    Input example: n = 4
    Return: ["1", "12", "123", "1234"]
    For pattern problems, return a list of rows. Do not print the rows.
    """
    # write your code here
    return []

def number_triangle(n):
    """
    Input example: n = 4
    Return: ["1", "12", "123", "1234"]
    For pattern problems, return a list of rows. Do not print the rows.
    """
    # write your code here
    return []

Visible browser tests run here when available.

Testcases1 visible / 3 hidden categories

Core example

Inputn = 4

Expected["1", "12", "123", "1234"]

Row 4 contains numbers 1 through 4 joined together.

Hidden Test Categories

small inputlarger inputedge shape