pythonArrays2

What it is

A simple command-line utility designed for educational purposes to demonstrate basic array manipulation and standard I/O handling in Python. It solves the specific algorithmic task of reversing an integer array provided via stdin.

Features

• Reads integer array size and elements from standard input
• Parses space-separated integers into a list
• Iterates through the array in reverse index order
• Outputs reversed elements as a space-separated line

Quickstart

echo '4\n1 4 3 2' | python pythonArrays.py

Architecture

flowchart TD
    A[User Input] -->|stdin| B(pythonArrays.py)
    B --> C{Parse Input}
    C -->|Split & Map| D[Integer Array]
    D --> E[Reverse Iteration Loop]
    E -->|sys.stdout.write| F[Console Output]

How it's built

The project consists of a single Python script (`pythonArrays.py`) that utilizes `sys` for output control and built-in functions for input parsing. It manually iterates through the array indices in reverse order to construct the output string.

How it runs

sequenceDiagram
    participant User
    participant Script as pythonArrays.py
    participant Sys as sys module
    
    User->>Script: Provide n (size) and array elements
    Script->>Script: Parse n via raw_input()
    Script->>Script: Parse array via map(int, split())
    loop For i in range(n)
        Script->>Script: Calculate reverse index x = n - i - 1
        Script->>Sys: Write str(arr[x]) + " "
    end
    Sys-->>User: Display reversed array

How to apply & reuse

Use this script as a reference for basic Python input/output operations, specifically handling space-separated integer inputs and controlling output formatting without trailing newlines using `sys.stdout.write`. It serves as a baseline solution for HackerRank-style array reversal challenges.

At a glance