Tip 1 : Focus on Design and DS algorithm
Tip 2 : Brush up API and web development
Tip 1 : Resume should be as concise as possible
Tip 2 : It should be focusing on professional projects
The basic idea is to check whether each row, column, and 3×3 box is valid or not on the basis of the following points:
The Sudoku board could be partially filled, where empty cells are filled with the character ‘.’.
An empty Sudoku board is also valid.
A valid Sudoku board (partially filled) is not necessarily solvable. Only the filled cells need to be validated.
Take two pointers; the first will point to the head of the linked list and the second will point to the Nth node from the beginning.
Now keep incrementing both the pointers by one at the same time until the second is pointing to the last node of the linked list.
After the operations from the previous step, the first pointer should point to the Nth node from the end now. So, delete the nod...
Tip 1 : Refer to standard design questions on google
Tip 2 : Provide diagrams as well
Design Twitter's API
Tip 1 : Referred to standard design questions on google
Tip 2 : Provided diagrams as well
Tip 3 : Coded in High-Level Language
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