SDE - 2

You have been given a long type array/list 'arr’ of size 'n’.

It represents an elevation map wherein 'arr[i]’ denotes the elevation of the 'ith' bar.

Print the total amount of rainwater that can be trapped in these elevations.

Note :

The width of each bar is the same and is equal to 1.

Example:

Input: ‘n’ = 6, ‘arr’ = [3, 0, 0, 2, 0, 4].

Output: 10

Explanation: Refer to the image for better comprehension:

Note :

You don't need to print anything. It has already been taken care of. Just implement the given function.

You have been given a column title as appears in an Excel sheet, return its corresponding column number.

For example:

A -> 1
B -> 2
C -> 3
...
Z -> 26
AA -> 27
AB -> 28 
...

You have been given a non-empty grid consisting of only 0s and 1s. You have to find the number of islands in the given grid.

An island is a group of 1s (representing land) connected horizontally, vertically or diagonally. You can assume that all four edges of the grid are surrounded by 0s (representing water).

You are given an Integer ‘N’ you have to convert the integer to words.

For example you are given integer N = 2234 then you have to return the string “two thousand two hundred and thirty four”.

Design Book My Show

You are given an array ‘A’ containing a permutation ‘N’ numbers (0 ≤ A[i] < N). You are also given another array ‘B’ containing a permutation ‘M’ numbers (0 ≤ B[j] < M) and it is also given that N ≤ M.

For each element in array ‘A’ you need to find the first greater element to the right of the element in array ‘B’ that has the same value as the current array A’s element. In other words, for each ‘i’ from 0 to N - 1 in array ‘A’, you need to find an index ‘j’ in array ‘B’ such that A[i] = B[j], now you need to print the element that lies on the right of the j’th index and is also greater than B[j]. Print -1 if there is no greater element.

Follow Up :

Can you solve it in O(N+M) time?

For Example :

If ‘N’ = 6, ‘A’ = {1, 2, 0, 3, 4, 5}, ‘M’ = 7 and ‘B’ = {3, 5, 0, 2, 1, 6, 4}.

Then, we will return {6, 6, 2, 5, -1, 6} because:
For i = 0, A[i] = 1 and the first element greater than 1 that lies to the right of it in array ‘B’ is 6.
For i = 1, A[i] = 2 and the first element greater than 2 that lies to the right of it in array ‘B’ is 6.
For i = 2, A[i] = 0 and the first element greater than 0 that lies to the right of it in array ‘B’ is 2.
For i = 3, A[i] = 3 and the first element greater than 3 that lies to the right of it in array ‘B’ is 5.
For i = 4, A[i] = 4 and there is no greater element to the right of 4 in array ‘B’.
For i = 5, A[i] = 5 and the first element greater than 5 that lies to the right of it in array ‘B’ is 6.

Given a Javascript object with the auth credentials. convert that object into the desired format and extract credentials out of it.