SDE - 1

Given an array ARR of N integers and an integer S. The task is to find whether there exists a subarray(positive length) of the given array such that the sum of elements of the subarray equals to S or not. If any subarray is found, return the start and end index (0 based index) of the subarray. Otherwise, consider both the START and END indexes as -1.

Note:

If two or more such subarrays exist, return any subarray.

For Example: If the given array is [1,2,3,4] and the value of S is equal to 7. Then there are two possible subarrays having sums equal to S are [1,2,3] and [3,4].

You live in a Ninja town which is in the form of a N * M grid. In this town, people travel from one place to another by jumping over the buildings which are present in each cell of the grid. It is Christmas eve, and Santa wants to give gifts and chocolates to the kids who live in the building which is present at the cell (N - 1, M - 1). Initially, Santa is present on cell (0, 0). Since Santa is in a hurry, help him find a path from starting point to the endpoint with the least amount of time.

The Santa may go only from one building to any of its adjacent buildings which is present either to the right or to the bottom or bottom right cell i.e. if the current position is (x, y), he may go to (x + 1, y + 1) or (x + 1, y) or (x, y + 1) given that the new coordinates are in the grid. The time taken to reach from one building to another is equal to the absolute difference between the heights of buildings.

Note:

1. The heights of the buildings are positive.
2. Santa starts from the cell (0, 0) and he has to reach the building (N - 1, M - 1).
3. Santa cannot leave the grid at any point of time.

Given a sequence of numbers. Find all leaders in sequence. An element is a leader if it is strictly greater than all the elements on its right side.

Note:

1. Rightmost element is always a leader.

2. The order of elements in the return sequence must be the same as the given sequence

Example:

The given sequence is 13, 14, 3, 8, 2 .

13 Not a leader because on the right side 14 is greater than 13.

14 lt is a leader because no one greater element in the right side.

3 Not a leader because on the right side 8 are greater than 3.

8 It is a leader because no one greater element on the right side.

2 It is a leader because it is the rightmost element in a sequence.

Hence there are 3 leaders in the above sequence which are 14, 8, 2.

You are given an array of integers 'ARR' of size 'N' and another integer 'K'.

Your task is to find and return 'K'th smallest value present in the array.

Note: All the elements in the array are distinct.

Example

If 'N' is 5 and 'K' is 3 and the array is 7, 2, 6, 1, 9

Sorting the array we get 1, 2, 6, 7, 9

Hence the 3rd smallest number is 6.

1. Where do you see yourself in 5 years?

2. What are your strengths and weakness?