There is shortage in diversity of test case and even by submitting wrong code that doesn't skip duplicate combinations , code gets accepted as no test case was there ...

Beyond big projects, doing smaller, focused exercises is super helpful. GeeksforGeeks has tons of these, covering everything ...

Lecture 12: Binary Search Explained in 1 Video L12 Code-PDF PDF Lecture 13: Binary Search Interview Questions Part-1 L13 Code H13 PDF PDF Lecture 14: Binary Search Interview Questions Part-2 L14 ...