1.Relationship between eigenvector and invertible matrix
2.Item平均价格
3.R Language Proficiency
4.Linear Regression Fundamentals
5.Understanding Decision Trees
6.Write SQL queries for business-related calculations
7.Write a SQL query for a Hard level problem
8.SQL Query for Airline Seat Reservation and Purchase System
9.Difference between Key-Value Databases and Document Databases
10.Reverse Words in a Sentence
11.Find the Kth Largest Element
12.Array Value Reduction and Summation
13.Sorting Submatrices by Minimum Element
14.Subarray Matching a Pattern
15.Count Even Number of Digits
16.Matrix Value Search
17.Rectangle Fit Operations
18.Binary String Analysis
19.Memory Allocation and Release System Simulation
20.Minimum Circular Shifts to Match Arrays
21.Addition and Subtraction Validation
22.Rectangle Box Fit
23.Array Sign Check
1. Relationship between eigenvector and invertible matrix
2. Item平均价格
一个item list有item id，item categories（即一个item可以属于多个category）和 price，计算某个category的item的平均价格。
3. R Language Proficiency
Are you proficient in R programming? Can you discuss a project you have completed using R?
4. Linear Regression Fundamentals
Discuss the fundamentals of linear regression. Can you explain the key concepts and formulas involved in linear regression?
5. Understanding Decision Trees
Explain the concept of a decision tree. Can you illustrate how a decision tree works with an example?
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