Visteon Design Engineer Interview Questions and Answers

A unique not null column can be used as a primary key, but not vice versa.

• Primary key must be unique and not null, but not all unique not null columns need to be primary keys.

• Primary key is used to identify each row uniquely, while unique not null column is used to ensure data integrity.

• A table can have multiple unique not null columns, but only one primary key.

Null cannot be equated as it represents absence of a value.

• Null is not equal to any value, including itself.

• Attempting to equate null can result in unexpected behavior.

• Null is often used to represent the absence of a value or unknown value.

Procedure overloading allows calling the correct procedure based on the number of parameters provided.

• Procedure overloading is based on the number of parameters.

• If calling with 2 arguments, the 2-parameter procedure is invoked.

• If calling with 3 arguments, the 3-parameter procedure is invoked.

• Passing a null as one of the parameters will still invoke the 3-parameter procedure if 3 arguments are provided.

To take design to an advanced level, one should focus on continuous learning, exploring new technologies, collaborating with others, and seeking feedback.

• Continuously learn and stay updated with the latest design trends and technologies.

• Explore new tools and software that can enhance the design process and improve efficiency.

• Collaborate with other designers, engineers, and stakeholders to gain different perspectives an...read more

A generic swap function swaps two values of any data type.

• The function should take two parameters of any data type.

• Use a temporary variable to store the value of one parameter.

• Assign the value of the second parameter to the first parameter.

• Assign the value of the temporary variable to the second parameter.

Search for an element in a rotated sorted linked list.

• Find the pivot point where the list is rotated.

• Divide the list into two sublists based on the pivot point.

• Perform binary search on the appropriate sublist.

• Handle edge cases such as empty list and list with only one element.

Search an element in a rotated sorted array

• Find the pivot point where the array is rotated

• Divide the array into two sub-arrays based on pivot point

• Perform binary search on the appropriate sub-array

• Repeat until element is found or sub-array size is 1

Given a Sudoku board, find possible numbers for an empty cell.

• Iterate through empty cells and check possible numbers using row, column, and box constraints.

• Use a set to keep track of possible numbers for each empty cell.

• Return the set of possible numbers for the given empty cell.

Find integer average of 4 unsigned integers without typecasting

• Add all the integers and divide by 4

• Use bit shifting to divide by 4

• Handle overflow by using long long data type

• Use unsigned int data type for input

Code to identify 32 bit or 64 bit architecture of a processor

• Check if the operating system is 32 bit or 64 bit

• If OS is 32 bit, processor is 32 bit

• If OS is 64 bit, check if processor supports 64 bit architecture

• Use CPUID instruction to check if processor supports 64 bit architecture

Convert binary number to base 64 integer

• Divide the binary number into groups of 6 bits

• Convert each group of 6 bits to decimal

• Map the decimal value to the corresponding base 64 character

• Concatenate the base 64 characters to form the final integer