DE Shaw Interview Questions and Answers for Freshers

I tackled a scheduling conflict during a group project by reorganizing tasks and improving communication among team members.

• Identified the scheduling conflict during our weekly meetings.

• Proposed a new timeline that accommodated everyone's availability.

• Implemented a shared online calendar for better coordination.

• Encouraged open communication to address any further issues.

To create a pointer array of strings:

• Declare a pointer array variable with the desired size

• Allocate memory for each string in the array using malloc

• Assign the memory address of each string to the corresponding array element

Code to reverse a binary search tree (BST)

• Traverse the BST in post-order

• Swap the left and right child of each node

• Return the root node of the reversed BST

A function to determine the endianess of a machine

• Create a variable with value 1

• Cast the variable to a byte array

• If the first byte is 1, the machine is little endian, else big endian

Explanation of memory sections: stack, heap, data

• Stack: stores function calls and local variables

• Heap: dynamically allocated memory

• Data: global and static variables

• Example: int x; //data, int *y = new int; //heap, void foo() { int z; } //stack

Default constructor is provided by the compiler if no constructor is defined. Copy constructor creates a new object by copying an existing object.

• Default constructor initializes member variables to default values.

• Copy constructor creates a new object with the same values as an existing object.

• Default constructor is called automatically by the compiler if no constructor is defined.

• Copy constructor is called when an...read more