586. Customer Placing the Largest Number of Orders LeetCode Solution
In this guide, you will get 586. Customer Placing the Largest Number of Orders LeetCode Solution with the best time and space complexity. The solution to Customer Placing the Largest Number of Orders problem is provided in various programming languages like C++, Java, and Python. This will be helpful for you if you are preparing for placements, hackathons, interviews, or practice purposes. The solutions provided here are very easy to follow and include detailed explanations.
Table of Contents
- Problem Statement
- Complexity Analysis
- Customer Placing the Largest Number of Orders solution in C++
- Customer Placing the Largest Number of Orders solution in Java
- Customer Placing the Largest Number of Orders solution in Python
- Additional Resources

Problem Statement of Customer Placing the Largest Number of Orders
Table: Orders
+—————–+———-+
| Column Name | Type |
+—————–+———-+
| order_number | int |
| customer_number | int |
+—————–+———-+
order_number is the primary key (column with unique values) for this table.
This table contains information about the order ID and the customer ID.
Write a solution to find the customer_number for the customer who has placed the largest number of orders.
The test cases are generated so that exactly one customer will have placed more orders than any other customer.
The result format is in the following example.
Example not found
Constraints not found
Complexity Analysis
- Time Complexity: Google AdSense
- Space Complexity: Google Analytics
586. Customer Placing the Largest Number of Orders LeetCode Solution in C++
SELECT customer_number
FROM Orders
GROUP BY 1
ORDER BY COUNT(*) DESC
LIMIT 1;
/* code provided by PROGIEZ */
586. Customer Placing the Largest Number of Orders LeetCode Solution in Java
N/A
// code provided by PROGIEZ
586. Customer Placing the Largest Number of Orders LeetCode Solution in Python
N/A
# code by PROGIEZ
Additional Resources
- Explore all LeetCode problem solutions at Progiez here
- Explore all problems on LeetCode website here
Happy Coding! Keep following PROGIEZ for more updates and solutions.