Leetcode 66: Plus One
Question
Given a non-negative integer represented as a non-empty array of digits, plus one to the integer.
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Leetcode 237: Delete Node in a Linked List
Question
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Data Preprocessing 101
SQLZOO Solutions
The following are my solutions to the basic questions of sqlzoo.net as part of my learning process.
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LDA Topic Modeling for Amazon Customer Reviews of Medicinal Food Products
Introduction
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Resume Related Resources and Questions
Leetcode 8: String to Integer (atoi)
Question
Implement atoi to convert a string to an integer. The atoi() function in C takes a string (which represents an integer) as an argument and returns its value of type int. So basically the function is used to convert a string argument to an integer.
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Leetcode 104: Maximum Depth of Binary Tree
Question
Given a binary tree, find its maximum depth.
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PCA
Generally, in real world dataset, we have the following problem:
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Markov Chain
What is Markov Chain?
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Udacity Interview Course
1. What IS Data Science?
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MLF 5 Part I: Noise and Error
The Soft Interview
软技能问题汇总:
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One Line Proof that a Covariance Matrix is Positive Semidefinite
Given a random vector c with zero mean, the covariance matrix \(\Sigma = E[cc^T]\). We give a one line proof that it is positive semidefinite.
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Key Assumptions of Linear and Logistic Regression
Assumptions of Linear Regression
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