Classic one from them: You have an array and you want to find the first non-repeating element.
Financial Software Developer Internship Interview Questions
758 financial software developer internship interview questions shared by candidates
If you have all the companies that are traded, and live inputs are coming of which company is being traded and what is the volume, how do you maintain the data, so that you can carry out operation of giving the top 10 most traded companies by volume of shares most efficiently.
unsorted integer array size n. unmodifiable list of "less than" / "greater than" operators. place elements from int array in between each "<" and ">" operator so that every comparison holds true. e.g. 6, 2, 8, 1, 3, 9, 4, 0, 5, 7 <, >, <, <, <, >, <, >, > answer: 0 < 9 > 1 < 2 < 3 < 8 > 4 < 7 > 6 > 5
1) Find the intersection of two arrays as a set. 2) Find the mirror or a binary tree. 3) Find the first non unique character in a stream of potentially infinite data.
Algorithm runtime analysis: What's the complexity of computing the fibonacci numbers?
Implement a queue class.
The chessboard problem. I first mentioned BFS and use of a Queue but the interviewer kept asking about some data structure with less memory that I could extract due to the simple structure of the graph. I did not understand what he meant. I eventually mentioned DFS and proved it works uses less memory. The cache problem took a long time. I kind of though I failed it at some point. I had no prior knowledge of the topic since I am not a CS guy. I eventually, used an array to store the access time to different items and O(n) search through it to find the least frequently used one. The interviewer did not raise the complexity. He wanted me to write code on a paper (which is hard, esp. in C).
Implement a function to raise a number to an exponent using your language of choice.
There are two linked lists, each around million nodes long. One linked list merges into the second one. Find the node where the two linked lists merge i.e find the first node that is part of both linked lists.
Halloween has just happened, and all of the kids in the neighborhood have candy. 5 of them are standing in a circle comparing stashes, when one of them (kid 0) gets the idea to steal his neighbor's (kid 1's) candy. Kid 1 gets upset and runs away crying. Kid 2 sees kid 0 stealing from kid 1, thinks that he could do that too, and steals kid 3's candy. Kid 4 sees kid 2, and steals from kid 0, and so on and so forth until there's only one kid left. Given n children, find the index of the last kid remaining.
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