PureStorageBy delivering a modern data experience, it saves technicians significant time and helps organizations seamlessly run applications in multi-cloud environments. With a real-world, automated storage and service model, PureStorage enables customers to apply data more efficiently while reducing the complexity and cost of infrastructure management.
Recently, PROGRAMHELP has just helped students complete OA and VO interviews for PureStorage, let's take a look together.
PureStorage OA
1. Bakery Quality Control
This programming topic asks you to write a program that verifies that the contents of a pastry box produced by a bakery match the expected template. The contents of each box are represented by a string, e.g., "pcm" indicates that the box contains cookies, muffins, and pies. The template is also a string representing the expected list of items.
The task is to compare the contents of each box with the corresponding template and check for a match. If it does not match, it is considered to be in error and the wrong number of boxes is returned.
Title Requirements:
- Each box contains up to 10 items and up to 1000 boxes are checked.
- Items within a box can be repeated, so "cc" (cookie-cookie) is different from "c" (cookie). And "cm" (cookie muffin) matches template "mc" (muffin cookie) because the order doesn't matter.
Given the following pairing of boxes and templates:
- ["cm", "mc"] (correct, order not important)
- ["ccm", "mc"] (error, too many cookies in the box)
- ["pm", "mc"] (Error. Pie in the box but no muffins)
- ["c", "mc"] (error, missing muffin)
Based on this list, the program should return 3, since 3 out of 4 boxes are non-compliant.
2. Find Repetitions
Title Description:
Given a short string short_s and a long string long_sRequired Calculations short_s exist long_s The maximum number of consecutive occurrences in the If the short_s Not in long_s Returns 0 if it occurs in the
Input constraints:
0 <= len(short_s) < 100 <= len(long_s) < 1,000,000
Example:
importation::short_s = "AB", long_s = "ABBAC"
exports::1 Description:"AB" exist "ABBAC" Appears once in the middle.
importation::short_s = "AB", long_s = "ABCABCABAB"
exports::2 Description:"AB" exist "ABCABCABAB" It occurs twice in a row, at indexes 0, 3, and 8.
Write a program that takes a short string and a long string and calculates and returns the maximum number of consecutive repetitions of the short string in the long string.
PureStorage VO
First Round Interview:Two interviewers non-appointed interviewers, Buddy + O1set, prepared in C++ but questions out of python, slightly flawed questions and follow up completion, moderate interviewer satisfaction.
Second Round Interview:First of all, let's copy a question that implements a callback mechanism with a Callback class and an Event class. call() There are two methods inside the Event class. register_cb()One is fire().
The title requirement is to realize register_cb() respond in singing fire()The callback object will be executed at a certain point in time. Find a data structure to store the callback object in and execute it at some point in time. fire()The After that, execute the register_cb(), would not have been put into the data structure.
While he was listening to the questions, we immediately made assistive prompts in the shared document to help him understand the information:
"I understand the problem to be implementing an event class Event, supports the user to register callback functions and execute them sequentially in order when events are triggered. The point is: keep the callback functions registered in order, while avoiding events being triggered repeatedly."
He repeated the passage almost verbatim and the interviewer nodded his head in approval on the spot.
Then refine the thought prompt, "I plan to create a Callback interface, which contains a run() method; in Event class, I will maintain a List A member variable of type registerCallback method to add a callback. And adding a callback to the eventFired method, then iterates through the list, calling each callback in turn with the run() Methods."
During the coding process, we pushed complete code structure tips:
interface Callback {
void execute(); }
}
class Event {
private List callbackList = new ArrayList(); private boolean isEventTriggered = false; }
private boolean isEventTriggered = false; private boolean
// Register the callback function
void addCallback(Callback callback) {
if (isEventTriggered) {
System.out.println("Cannot register callback, event already triggered."); return; // Register the callback function.
return; }
}
callbackList.add(callback); }
}
// Trigger the event and execute all callback functions
void triggerEvent() {
if (isEventTriggered) {
System.out.println("Event has already been triggered."); return; // Trigger the event.
return.
}
for (Callback callback : callbackList) {
callback.execute(); }
}
isEventTriggered = true; }
}
}
Our tip: After the event is triggered, subsequent registrations do not take effect and need to be registerCallback Judgment in.
The interviewer asked, "If event method is called twice, how can I avoid duplicate execution?"
We replied, "Introducing the boolean flag hasFired, set to true after the first trigger, subsequent calls ignore and indicate that the event has been triggered."
The candidate retells it fluently and the interviewer comments, "This is very reasonable boundary control."
This round was completed with a high level of interviewer satisfaction and a full 30 minutes of conversation, so this round can be reassuring.
interview summary
Writing code is only part of the interview, what really determines the outcome is the candidate's ability to clearly articulate ideas in a limited amount of time with a focus on boundaries and stability, which are PROGRAMHELP's core values.
We provide five rounds of text prompts and two complete code frameworks that candidates can naturally repeat or write to complete the interview efficiently and smoothly, with attention to details such asAvoiding repeated callbacks, ensuring sequential execution, and keeping the code structure tidy.
Interviewer Comments, "Clear thinking, concise code, well thought out."
The candidate said that she had been evaluated as a "poor communicator" because of her lack of clarity, but this time she was able to present her design clearly and get approval: "Without your help, I would have been stuck in a language organization problem and would not have been able to demonstrate my ability."
That's our value: not writing your code for you, but providing efficient language organization and code structure to help you seize extra credit opportunities when it counts.
Using our services, candidates receive clear presentation of ideas, structured design methodology and guidance on how to respond to follow-up questions. More importantly, the code frameworks provided are not just "answers" but "clear and highly readable" templates that candidates can understand and fine-tune to avoid confusion.
This service is for people who are not fluent in expression, whose logic tends to fluctuate or who tend to get stuck under pressure. We act as an invisible aid so that you always present yourself at your best.
With the help of PROGRAMHELP, this candidate performed well. If you also need PureStorage's interview assistance or interviewing service to help you enter your ideal company, please feel free to contact us. Contact Us.
If you need more interview support or interview proxy practice, feel free to contact us. We offer comprehensive interview support services to help you successfully land a job at your dream company.
