JoeUnsung

Array

• Two Sum
• Best Time to Buy and Sell Stock
• Contains Duplicate
• Product of Array Except Self
• Maximum Subarray
• Maximum Product Subarray
• Find Minimum in Rotated Sorted Array

JoeUnsung

## apply xgboost on otto data

## url : https://www.kaggle.com/c/otto-group-product-classification-challenge/data

## reference : https://www.analyticsvidhya.com/blog/2016/01/xgboost-algorithm-easy-steps/



install.packages("Matrix")

JoeUnsung

// 입출력 (11/11) : 곱셈
package playGround;
import java.util.*;

public class testJava{
    public static void main(String[] args){
        Scanner temp = new Scanner(System.in);
        int[] result_arr = new int[3];
        

JoeUnsung

// Java의 정석 예제


// 2-4
package playGround;

public class testJava {

	public static void main(String[] args) {
		byte b = 1;

JoeUnsung

 
  ##
  ## dplyr practice of 5 core verbs ( select, mutate, filter, arrange, summarise )
  ##
  
  ## 1 select - 그냥 SQL select 처럼 쓰면 되나보다 범위 설정도 되는듯 1:4 이런식
  buying_no_shopping %>%
    select(ID, BIZ_UNIT)
  
  custo %>%

JoeUnsung

############################
## 카카오 블라인드 알고리즘 문제 ##
###########################
## 1


## 2


## 3

JoeUnsung

# -*- coding: utf-8 -*-
"""
Created on Fri Dec  8 14:33:57 2017

@author: Administrator
"""

_myname='samsjang'
my_name='홍길동'

JoeUnsung

## 워킹디렉토리
getwd()
setwd("C:/Users/Administrator/Documents/GitHub/LPOINT/data")
setwd("D:/data")


install.packages("ggplot2","dplyr","tidyr","plotly")
install.packages("sqldf")

JoeUnsung

# -*- coding: utf-8 -*-
"""
BJ Judge solution
"""


## 입출력 받아보기
    ## 11718   
    while True :
        try :

JoeUnsung

## MACHINE LEARNING IN R
## INDEX
## 1. KNN
## 2. 나이브 베이즈
## 3. 의사결정 트리
## 4. 서포트 벡터 머신
## 5. 회귀분석