# Companies matching "Finance"

Irwin Commercial Finance Corporation Interviews

www.irwincfequipment.com / HQ: Bellevue, WA

0 Interviews

## Finance Interview Questions

An array of 99 elements contains integers from 1 to 100 with one missing element. Find the missing element. 22 Answers100 1. calculate the sum of elements in array say SUM 2. sum of numbers 1 to 100 is(n* (n+1))/2 = 5050 when n==100 3. missing element is (5050-SUM) 100 Show More Responses The parameters of the question do not allow you to determine what element is missing. Either more information should be supplied, or all answers are equally correct. How could an array size of 99 elements contain 1 - 100? Should either be integers 1-99 or 2-100 , in either case there is no missing element. All indices are accounted for. Sum them and then subtract them from 5050. In general, if an array of size n - 1 elements has unique elements from 1 to n, then the missing element can be found by subtracting the sum of the elements in the array from sum(1 ... n) = n * (n + 1) / 2. Alternately, one could use a boolean array of length n with all values set to false and then for each value, set array[val - 1] to true. To find the missing value, scan through the array and find the index which is set to false. Return index + 1. This requires O(n) memory and two passes over an O(n) array (instead of constant memory and one pass), but has the advantage of actually allowing you to verify whether or not the input was well formed. Admittedly, this question is poorly posed; however, the answer they are looking for refers to the syntax/nomenclature of some (not all) programming languages to index arrays starting at “0.” As such the 1-100 stored values would be in entries 0-99 of the array. Read the question. Here are the steps to solve it: 1) find the sum of integers 1 to 100 2) subtract the sum of the 99 members of your set 3) the result is your missing element! Very satisfying! Sort array. While loop with an index variable with condition of next element being 1 greater than previous element. When loop breaks, return the value of the index. Doing the expected sum and subtracting the actual gives the run time of O(2n), however a bucket sort will almost always do it in less time (somewhere between O(n) and O(2n)): 1. create a 101-int (or boolean) array (to have a 100-index) 2. traverse original and for each int, assign value in bucket array to 1 or true. 3.After first traversal, traverse created array starting at one, and when value is false, print it. 100 100 coz in array it initial value starts frm 0 to 100. or else 4 further clarification u can study array chapter in c or c++ 100 Show More Responses The question: "An array of 99 elements contains integers from 1 to 100 with one missing element. Find the missing element." The information states that the integer count is 1 to 100. I take this to be inclusive of all elements in the array so that the missing inters would be subjective to their arrangement or random. In other words, I do not have enough information to say which one. 1 I need more information. 1. Are the integers unique in this array? 2. Do I have enough information to find the sum of the integers in the array (or some aggregation)? If sum is available, then, the answer is 5050-sum{integers}. Bucket Sort works and summation works. I think both are good, practical and clever solutions. I think sorting the array then searching may be unnecessary computation. Another interesting method which may be faster. SIMD computers may do this particularly quickly: Do a bitwise operation on all the elements: Result = Array[0] xor Array[1] xor ... Array[98] xor 1 xor 2 xor ... xor 100 Result = Missing number. Explanation: When you xor 2 identical numbers your result = 0. For example, 5 xor 5 -> 101 xor 101 = 000. (5 in decimal is 101 in binary). Knowing that "xoring" 2 identical numbers results in zero is useful. Now we apply this useful info to the problem. Array is Identical to a list of 1,2,3,...,100 except for one number. In other words 1,2,3,...,100 duplicates all of array's elements and adds one extra element that is missing in Array. Therefore, we now have 2 instances of each element in the Array in addition to one extra element in 1,2,3,...,100. We can see when you xor two duplicate numbers you get zero. Because we have pairs for all numbers in Array and one extra number we are essentially "xoring" the missing number with zero. When we xor the missing number with zero we get the missing number. (For example, 6 xor 0 -> 110 xor 000 = 110) The question states that one (not two or three or n) element ("value") from 1 to 100 is missing. There are 99 elements ("values") in the array. The question implies that the data is well-formed because it states that only element is missing. It doesn't ask you to find the missing value(s), but the one (singular) missing element. With the problem constrained, the solution falls out. Subtracting from 5050 is an elegant solution, but not obvious as to why it works. The array of booleans is more obvious, but doesn't scale well. I agree with one of the answers in this thread...5050-sum(elements) = missing item. Other approach that crossed my mind is something similar to binary search. Check the index of 50th element: if A(50) == 50, the missing element > 50, else if A(50) > 50, missing element <50. Do this iteratively. The number of comparisons would be log 100 = 7. 0 100 Add 1-100 to a hash of 100 elements. Then compare each element with the hash.. Answer in o(n) |

### Data Analyst at Capital One was asked...

Case interview: basic business problem (if product X costs Capital One $4.00 per unit, with a $800 sunk cost, and we charge X amount of dollars along with a $10 annual fee, how many do we need to sell to break even, etc). Followed by a longer discussion of more complex problems that the situation might entail. 7 AnswersMostly algebra, basic economics, and common sense. total cost= 4x + 800 total income= x^2 + 10x to break even: 4x + 800 = x^2 + 10x solving for x by evaluating the quadratic equation above, x ~= 25.45 To break even, 26 units must be sold Why is x^2? Show More Responses Erin - it probably shouldn't be. The Revenue side should be (unit price + 10) * number of units sold. Dapo has assumed that unit price and number of units sold is the same since the letter X is used to describe both variables. That might be correct, but it would be an odd quirk of the question - I'd bet that you can ask what the unit price is. very good if all 3 of you are interviewing, I can get the position. It doesn't say the annual fee is per product, so you have to assume or ask if it is the case, and if not the # of customer and potential customers estimation. And that x^2 Dapo, did you pass the online test? How is it possible to answer this without knowing the selling price per product? # of quantities to sell in order to breakeven depends on how much the selling price per product is? Since the selling price says X, you can sell it for $790 and breakeven by just selling 1 product ($790 per product + $10 annual fee (assuming it's per product)). But I may be misunderstanding the information provided. Any feedback? Actually, to correct the above response, if the selling price for 1 product is $794 (to cover the cost price of the product itself ($4) ), only 1 quantity needs to be sold. ($794 + $10) = ($800 + $4). |

What is a JavaScript callback function? 5 Answers5 vote down star 4 I understand passing in a function to another function as a callback and having it execute, but I'm not understanding the best implementation to do that. I'm looking for a very basic example, like this: var myCallBackExample = { myFirstFunction : function( param1, param2, callback ) { // Do something with param1 and param2. if ( arguments.length == 3 ) { // Execute callback function. // What is the "best" way to do this? } }, mySecondFunction : function() { myFirstFunction( false, true, function() { // When this anonymous function is called, execute it. }); } }; In myFirstFunction, if I do return new callback(), then it works and executes the anonymous function, but that doesn't seem like the correct approach to me. I don't think Bloomberg is a very good company. I am an excellent web developer and have gotten multiple offers from other companies with big names, but was rejected by Bloomberg. They are too demanding during the job interview and it becomes a game of how well you can interview as opposed to how talented an employee you are and how much you can contribute to the growth of the company. A callback function is a piece of JavaScript code that executes after the main function that the callback is attached to executes successfully. Show More Responses udaykanth, I would say that a .forEach() would be the most common and most basic use of a callback function. I'm just writing this to help anyone that might have a hard time thinking up a quick example if the come across this question themselves. Example: var numArray = [ 1, 2, 3 ] ; numArray.forEach( function( i ) { console.log( arr[ i - 1 ] ) } ) ; // logs out // 1 // 2 // 3 Is there a front end role at bloomberg. I guess your position must have been labelled software dev right? altho ur a dront end dev |

### Customer Service at Wells Fargo was asked...

Pretend I need to buy a pen, and your company sells pens. Why should I buy your pen? 3 AnswersI described the look and feel of the pen. How it was about the same price as the competition, but it was a better quality and would last longer and therefore save them money in the long run when they wouldn't need to replace it as quickly. While this pen is slightly more expensive, it is of higher quality craftsmanship. It will not blot or leak like other pens tend to do and is most comfortable in your hand. Because you need one |

### Teller at Wells Fargo was asked...

How did you handle an irate customer? 2 AnswersListen to them, understand their questions or concerns and proceed accordingly. Yes you listen. Then relate back to them what they are concerned or upset about. Let them know you can help and if you can't personally, you would like to share their concern with someone that can help further to resolve their issue immediately. |

Tell me a time when you had to influence clients to follow a different course of action. 1 AnswerI explained the context for my client's initial inclination and how I persuaded them to adopt a different alternative through case studies, data and postulating how their selection would impact their users in the future (creative visualization). |

### Part Time Teller at Chase was asked...

How does good customer service sounds, feels, and looks like? 1 AnswerA good customer service sounds, feels, and looks like when you know you have made the customer feel special. When they leave the branch, they have a smile on their face. |

### Credit Analyst I at Wells Fargo was asked...

How would you reconcile retained earnings? 1 AnswerI was expecting him to want RE reconciled to something else, but I answered correctly, regardless. Beginning RE + Net Income - Dividends = Ending RE |

What reporting tools have you used? Actuate, Brio, Crystal Reports? How much experience have you had in scheduling jobs on Unix? Can you write XML and implement it? 1 AnswerThe interviewer was interested in breath of experience rather than specific technical skill. Unix work with scheduling and XML skills are necessary, but not heavy (the same procedures are done over and over again). Emphasis was on selling yourself through experience. |

### Production Supervisor at GE was asked...

Tell me about a time when you had to make a decision without all the information you needed to make the decision. What was the decision and what was the outcome. 6 AnswersThat is a very good question. I don't have an answer, can we come back to this one at the end? Once we came back to it I answered with having to decide whether to schedule weekend O.T. by 7am Thursday when much more relevant information typically comes in between 7:30am Thursday to close of business Fridays. When I don't have all the information I need to make a decision, I try to pool my resources and gather information. Do some research, ask other employees, so that I can be as educated as possible going into the decision. Then I trust my leadership skills and if the outcome is not as expected, I would try to make further decisions that could help the situation. I was asked how much lean and safety experience I had. Show More Responses I told the production Manager I had 15 years of lean and over 20 years experience with safety. I ask him the same questions. He said 3 years and told me I didn't have enough experience within both areas. I felt I wasted my time even interviewing with GE. I glad I took a different job at another company. I wouldn’t take a decision with out all the information, I rather wait and gather all information posible before making a final decision |