Triangle and Pyramid Patterns

Problem Description

The task is to print two patterns based on a single size input N:

1. Triangle Pattern (Right-Angled): A right-angled triangle where the number of characters in a row i is determined by i.
2. Pyramid Pattern (Isosceles/Centered): A centered triangle that uses spaces before the characters to achieve symmetry.

---

Examples (N=5)

1. Triangle Pattern

Logic: Print i characters in row i.

2. Pyramid Pattern

Logic: Print N-i-1 spaces, then 2*i + 1 characters in row i.