XZCXZX

XZCXZX is an online platform that provides coding challenges and competitive coding contests for programmers of different levels.

Features

• Coding Challenges: XZCXZX provides various coding challenges to help programmers improve their skills and practice problem-solving.
• Leaderboards: Users can participate in coding contests and earn points to climb up the leaderboard.
• Personal Progress Tracker: Users can track their progress and monitor their improvement over time.
• Code Submission: Users can submit their codes and receive feedback from other users and moderators.
• Forum: XZCXZX also provides a forum for users to discuss coding-related topics and share their knowledge.

Technologies Used

XZCXZX is built using the following technologies:

• Django: Python-based web framework
• Bootstrap: Front-end framework for responsive design
• PostgreSQL: Relational database management system

Code Snippet

def find_duplicates(arr):
    """
    Given an array of integers, find if the array contains any duplicates.

    Args:
    arr: List of integers.

    Returns:
    True if the array contains duplicates, else False.
    """

    # Create a set to store unique elements
    unique_arr = set()

    # Iterate through the array
    for num in arr:
        # If the element is already in the set, return True
        if num in unique_arr:
            return True
        # Else, add the element to the set
        else:
            unique_arr.add(num)

    # If no duplicates found, return False
    return False

This is a sample code snippet that demonstrates how to find duplicates in an array of integers in Python. The function uses a set to store unique elements and iterates through the array, adding elements to the set if they are not already in it. If an element is found that is already in the set, the function returns True, indicating that there are duplicates in the array.