SDE - Intern

For a given array with N elements, you need to find the length of the longest subsequence from the array such that all the elements of the subsequence are sorted in strictly increasing order.

Strictly Increasing Sequence is when each term in the sequence is larger than the preceding term.

For example:

[1, 2, 3, 4] is a strictly increasing array, while [2, 1, 4, 3] is not.

You are given an array 'a' of size 'n'.

Print the Next Greater Element(NGE) for every element.

The Next Greater Element for an element 'x' is the first element on the right side of 'x' in the array, which is greater than 'x'.

If no greater elements exist to the right of 'x', consider the next greater element as -1.

For example:

Input: 'a' = [7, 12, 1, 20]

Output: NGE = [12, 20, 20, -1]

Explanation: For the given array,

- The next greater element for 7 is 12.

- The next greater element for 12 is 20. 

- The next greater element for 1 is 20. 

- There is no greater element for 20 on the right side. So we consider NGE as -1.

Given an array of size 'N' return the count array such that COUNT[i] equals the number of element which are smaller than ARR[ i ] on its the right side.

For Example : ARR = [4,2,1,5] the count array corresponding to the given array is :-.

The Number of elements smaller than 4 on its right side is 2.
The Number of elements smaller than 2 on its right side is 1.
The Number of elements smaller than 1 on its right side is 0.
The Number of elements smaller than 5 on its right side is 0.
Hence the count array is [2,1,0,0]

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