SDE - 1

It was problem of SQL and plsql

DSA questions all about pointing, recursion and some searching sorting algorithm

It was on Unix operating system about bash and kernal

You are given ‘N’ distinct integers in the form of an array ‘ARR’. You need to find whether it is possible to sort the given array by choosing a continuous subarray and reversing that subarray. You have to return “true” if it is possible to sort the array after reversing the subarray. Otherwise, return “false”.

For example:

Let ‘ARR’ be: [3, 2, 1]
We can pick the whole array as a subarray and reverse it to get the sorted array [1, 2, 3].

Stack is a data structure that follows the LIFO (Last in First out) principle. Design and implement a stack to implement the following functions:

1. Push(num): Push the given number in the stack if the stack is not full.

2. Pop: Remove and print the top element from the stack if present, else print -1.

3. Top: Print the top element of the stack if present, else print -1.

4. isEmpty: Print 1 if the stack is empty, else print 0.

5. isFull: Print 1 if the stack is full, else print 0.

You have been given ‘m’ operations which you need to perform in the stack. Your task is to implement all the functions of the stack.

Example:

We perform the following operations on an empty stack which has capacity 2:

When operation 1 1 is performed, we insert 1 in the stack.

When operation 1 2  is performed, we insert 2 in the stack. 

When operation 2 is performed, we remove the top element from the stack and print 2.

When operation 3 is performed, we print the top element of the stack, i.e., 3.

When operation 4 is performed, we print 0 because the stack is not empty.

When operation 5 is performed, we print 0 because the stack is size 1, which is not equal to its capacity.

You are given a binary tree, where the data present in each node is an integer. You have to find whether the given tree is symmetric or not.

Symmetric tree is a binary tree, whose mirror image is exactly the same as the original tree.

For Example:

This problem based on PLSQL where i need to make real time package including procedure, function and cursor.

She have asked me questions about my background, my college, and my previous question, salary discuss happened.