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coding
Medium
Verified Question
#1
1. Dictionary of Sorted Letters
Category: Array coding problem# Question Given a string where letters are sorted in alphabetical order, identify all letters that appear more than twice and record their first and...Input: Array
Output: Computed result
coding
Medium
Verified Question
#2
2. GPS Error Tracking
Category: Algorithm coding problem# Question You are tracking GPS location errors by comparing measured GPS locations against a set of "golden" (reference) locations. Each location...Input: List
Output: Computed result
coding
Hard
Verified Question
#3
3. Minimum Boxing Area
Category: Binary search coding problem# Question Design a data structure to maintain a dynamic set of points on a 2D coordinate plane. Support operations to insert points, remove points,...Input: List
Output: Integer
coding
Medium
Verified Question
#4
4. Reverse Segment of Linked List
Category: Linked list coding problem# Question Given a singly linked list, reverse the second half of the list and then interleave the nodes from the first half and the reversed second...Input: Linked list
Output: Computed result
coding
Medium
Verified Question
#5
5. Unpainted Segments
Category: Binary search coding problem# Question You are given a range [A, B] and a sequence of painting operations. For each operation [L, R], calculate the total length of unpainted...Input: Array of intervals
Output: Computed result
coding
Medium
Verified Question
#6
6. Running Tests With Failing Pairs
Category: Algorithm coding problem# Question You are given a set of test cases and a black-box function
runTests() that accepts a subset of these test cases and returns whether...Input: ListOutput: Integer
coding
Medium
Verified Question
#7
7. Connected Crop Allocation
Category: Grid/matrix coding problem# Question You are given an M x N garden grid and a list of crops, each requiring a specific number of plots. The total number of plots required by...Input: 2D grid
Output: Computed result
coding
Medium
Verified Question
#8
8. [CodeSignal] Maximum Zero-Sum Triplets
Category: Array coding problem# Question You are given an array
A of integers. A triplet is a sequence of three consecutive elements. A triplet is called zero-sum if the...Input: ArrayOutput: Computed result
coding
Easy
Verified Question
#9
9. [CodeSignal] Coin Table Game
Category: String coding problem# Question A player is playing a game in which coins are placed on and removed from a table. The game consists of multiple rounds. At the beginning...Input: String
Output: Computed result
coding
Medium
Verified Question
#10
10. Longest Match Tokenizer
Category: Array coding problemYou are given a text string
text and a dictionary array where each element is in the format "<key>:<id>". Here key is a token string and id...Input: ArrayOutput: Computed result
coding
Hard
Verified Question
#11
11. Dual Extremes Queue
Category: Queue-based coding problemDesign a
StreamBuffer class that buffers a stream of integer latency samples in FIFO order and supports O(1) access to both the minimum and maximum...Input: Integer(s)Output: Integer
coding
Medium
Verified Question
#12
12. Daily Branch Pruning
Category: Tree coding problemA file system manages a directory tree. Each day, all leaf directories (those with no child directories) are simultaneously removed. Directories that...Input: Array
Output: Array
coding
Medium
Verified Question
#13
13. Path Router
Category: Algorithm coding problem# Question Design a
PathRouter class that maps URL-like path patterns to handler names. Patterns may contain wildcard segments (*) that match any...Input: Number(s)Output: Computed result
coding
Medium
Verified Question
#14
14. Frequency Merge Tree
Category: Tree coding problem# Question Given a string, build a Frequency Merge Tree as follows: 1. Count the frequency of each character in the string. 2. Create a leaf node...Input: String
Output: Computed result
coding
Hard
Verified Question
#15
15. Expression Simplifier
Category: String coding problemGiven an algebraic expression string containing single lowercase-letter variables, the operators
+ and -, and parentheses ( and ), simplify...Input: StringOutput: Computed result
coding
Medium
Verified Question
#16
16. Largest Island Perimeter
Category: Grid/matrix coding problemYou are given an
m x n binary grid where each cell is either '1' (land) or '0' (water). A group of connected land cells (connected horizontally...Input: 2D gridOutput: Computed result
coding
Hard
Verified Question
#17
17. Interval Coverage Counter
Category: Interval-based coding problemGiven a list of closed intervals on the integer number line, build a data structure that efficiently answers point-coverage queries. A closed...Input: List
Output: Computed result
coding
Medium
infra
#1
1. [OA] Dockerfile Optimization — enhance container build efficiency for Google Cloud services
To optimize the deployment of applications using containerization, it is crucial to enhance the build efficiency of Docker images. This is particularly important for scaling Google services to ensure quicker deployment and reduced resource utilization.
Given a
Return the optimized Dockerfile as a string.Example 1:
Input:
Output:
Explanation: The instructions are reordered to only install packages once.Constraints:
-
- The Dockerfile syntax will remain valid.
Given a
Dockerfile, optimize the instructions to minimize the image size and improve build speed.- def optimize_dockerfile(original: str) -> str: Return the optimized Dockerfile as a string.Example 1:
Input:
FROM python:3.8
RUN apt-get update && apt-get -y install git
COPY . .
RUN pip install -r requirements.txtOutput:
FROM python:3.8
COPY requirements.txt .
RUN pip install -r requirements.txt
COPY . .Explanation: The instructions are reordered to only install packages once.Constraints:
-
1 <= original.length <= 1000 - The Dockerfile syntax will remain valid.
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