Today I spent some time on practicing coding. When I was trying to solve a problem about finding paths with elements whose sum equals to a specified value, given a binary tree and a value, I stumble against some unknown problems.

[……]

Skip to content
# Month: December 2018

## Trick on Appending a List to Another List in Python

## Detection for Abnormal Params with HMM (with Code)

## K Sum Problem

Today I spent some time on practicing coding. When I was trying to solve a problem about finding paths with elements whose sum equals to a specified value, given a binary tree and a value, I stumble against some unknown problems.

[……]

Recently, I am studying on intrusion detection with machine learning, hoping to use what I have learned this semester in Machine Learning course to solve some real life problems. The first topic is using Hidden Markov Models to detect abnormal input for parameters.

[……]

K sum problems are the sort of problems that asking you to find the k numbers whose sum is the target when given a number array or list. On LeetCode, there are two sum and three sum problems. Today, I am gonna discuss such kind of problems.

[……]