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Day 42/366

πŸš€ Today's Learning:


  • Print all subsequences/Power Set
  • Generate all binary strings

🌟 Dev

  • Use of postman for API testing

πŸ” Some Key Highlights:


To print all subsequences or the power set of a given set, you'd typically use a recursive approach. Starting with an empty subsequence, you'd iterate through each element in the set. At each step, you have two choices: either include the current element in the subsequence or exclude it. You continue this process recursively, generating subsequences that include or exclude each subsequent element. The base case occurs when you've processed all elements, at which point you print or store the generated subsequence. By exploring all possible combinations, you effectively generate all subsequences or the power set of the original set.

For generating all binary strings of length n, you can employ a similar recursive strategy. Starting with an empty string of length n, you'd explore each position in the string. At each position, you can either append '0' or '1'. You continue this process recursively until you've filled all n positions in the string. Once you've reached the base case (when all positions are filled), you print or store the generated binary string. By systematically exploring all possible combinations of '0' and '1' at each position, you generate all binary strings of length n.


Using Postman for API testing simplifies the process by providing a user-friendly interface for sending requests to an API endpoint and analyzing the responses. Much like sending a request through a web browser, you can input the endpoint URL, select the HTTP method (such as GET, POST, PUT, DELETE, etc.), and include any required headers, parameters, or body content. Postman allows you to organize requests into collections, making it easy to manage and run tests for different APIs or endpoints. Additionally, you can set up and automate workflows by chaining requests together, defining variables, and writing tests to verify the correctness of the responses. Postman's features, including environment variables, pre-request scripts, and test scripts, streamline the testing process and facilitate collaboration among team members. Overall, Postman serves as a comprehensive tool for API testing, offering a range of functionalities to ensure the reliability and functionality of APIs.

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