SDE - 1

You have been given an array/list 'arr' consisting of 'n' elements.

Each element in the array is either 0, 1 or 2.

Sort this array/list in increasing order.

Do not make a new array/list. Make changes in the given array/list.

Example :

Input: 'arr' = [2, 2, 2, 2, 0, 0, 1, 0]

Output: Final 'arr' = [0, 0, 0, 1, 2, 2, 2, 2]

Explanation: The array is sorted in increasing order.

3 OS, 3 DBMS, 4 MATHS

Number Of MCQs - 10

You are given a 2-D matrix with 'N' rows and 'M' columns, each row of the matrix is sorted in non-decreasing order and the first element of each row is greater than or equal to the last element of the previous row. You are also given an integer ‘X’, you are supposed to find whether 'X' is present in the given matrix or not.

You are given an array arr of length N. You have to return a list of integers containing the NGE(next greater element) of each element of the given array. The NGE for an element X is the first greater element on the right side of X in the array. Elements for which no greater element exists, consider the NGE as -1.

For Example :

If the given array is [1, 3, 2], then you need to return [3, -1, -1]. Because for 1, 3 is the next greater element, for 3 it does not have any greater number to its right, and similarly for 2.