3 technical rounds.

First, 10 minutes asking about previous experience and project-related questions.

Then, two or three problem-solving questions were asked.

For a given algebraic expression, check if the brackets are in BODMAS format.

‘Brackets’ are in BODMAS format if they follow the below hierarchy:

• [
• {
• (
• )
• }
• ]

Write a function that:

• Takes an algebraic expression as input.
• Checks if the brackets follow the BODMAS format.
• Returns “Valid” or “Invalid” accordingly.

Examples:

Input: [{50–(2+3)}+15]÷12 Output: Valid

Input: {a*(b+c)}/d + {()} Output: Valid

Input: 1 + [2*(a + b)] Output: Invalid

Input: 4 - {6 * [y + z]} Output: Invalid

Input: 7 / [{(a + b)} + 4)] Output: Invalid