Leaderboard
Showing:
Stock buy and sell
Medium Accuracy: 39.53% Submissions: 32003 Points: 4

The cost of stock on each day is given in an array A[] of size N. Find all the days on which you buy and sell the stock so that in between those days your profit is maximum.

Example 1:

Input:
N = 7
A[] = {100,180,260,310,40,535,695}
Output:
(0 3) (4 6)
Explanation:
We can buy stock on day 0,
and sell it on 3rd day, which will 
give us maximum profit. Now, we buy 
stock on day 4 and sell it on day 6.

Example 2:

Input:
N = 5
A[] = {4,2,2,2,4}
Output:
(3 4)
Explanation:
We can buy stock on day 3,
and sell it on 4th day, which will 
give us maximum profit.


Your Task:
The task is to complete the function stockBuySell() which takes an array A[] and N as input parameters and finds the days of buying and selling stock. The function must return a 2D list of integers containing all the buy-sell pairs. If there is No Profit, return an empty list.


Expected Time Complexity : O(N)
Expected Auxiliary Space: O(N)


Constraints:
2 <= N <= 103
0 <= Ai <= 104

to report an issue on this page.

Editorial

We strongly recommend solving this problem on your own before viewing its editorial. Do you still want to view the editorial?

Yes

All Submissions

My Submissions:

Login to access your submissions.

Stock buy and sell

Output Window