SDE - Intern

You have been given weights and values of ‘N’ items. You are also given a knapsack of size ‘W’.

Your task is to put the items in the knapsack such that the total value of items in the knapsack is maximum.

Note:

You are allowed to break the items.

Example:

If 'N = 4' and 'W = 10'. The weights and values of items are weights = [6, 1, 5, 3] and values = [3, 6, 1, 4]. 
Then the best way to fill the knapsack is to choose items with weight 6, 1 and  3. The total value of knapsack = 3 + 6 + 4 = 13.00   

You have been given weights and values of ‘N’ items. You are also given a knapsack of size ‘W’.

Your task is to put the items in the knapsack such that the total value of items in the knapsack is maximum.

Note:

You are allowed to break the items.

Example:

If 'N = 4' and 'W = 10'. The weights and values of items are weights = [6, 1, 5, 3] and values = [3, 6, 1, 4]. 
Then the best way to fill the knapsack is to choose items with weight 6, 1 and  3. The total value of knapsack = 3 + 6 + 4 = 13.00   

Given an unsorted array of integers, you have to move the array elements in a way such that all the zeroes are transferred to the end, and all the non-zero elements are moved to the front. The non-zero elements must be ordered in their order of appearance.

For example, if the input array is: [0, 1, -2, 3, 4, 0, 5, -27, 9, 0], then the output array must be:

[1, -2, 3, 4, 5, -27, 9, 0, 0, 0].

Expected Complexity: Try doing it in O(n) time complexity and O(1) space complexity. Here, ‘n’ is the size of the array.

You have been given an integer array/list(arr) and a number 'Sum'. Find and return the total number of pairs in the array/list which when added, results equal to the 'Sum'.

Note:

Given array/list can contain duplicate elements.

(arr[i],arr[j]) and (arr[j],arr[i]) are considered same.

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.

Print the following pattern for the given number of rows.

Pattern for N = 4

The dots represent spaces.

Your strengths and weaknesses

Where do you see yourself in 5 years?