youchen

/* Basic Select */
-- Revising the Select Query I
SELECT
    *
FROM
    CITY
WHERE
    POPULATION > 100000
    AND COUNTRYCODE = 'USA'

youchen

#include <iostream>
#include <cmath>
#include <string>
using namespace std;

bool isPrime(int num){
    if (num <= 1) return false;
    
    for(int i = 2; i <= sqrt(num); i++){
        if (num % i == 0) {

youchen

#include <iostream>
#include <cmath>
using namespace std;

bool isPrime(int num){
    if (num <= 1) return false;
    
    for(int i = 2; i <= sqrt(num); i++){
        if (num % i == 0) {
            return false;

youchen

package main

import "fmt"

func fibonacci() func() int {
	fib1, fib2 := 0, 1
	return func() int{
		defer func() { fib1, fib2 = fib2, fib1 + fib2 } ()
		return fib1
	}

youchen

package main

import (
	"golang.org/x/tour/wc"
	"strings"
)

func WordCount(s string) map[string]int {
	sArr := strings.Fields(s)
	count := make(map[string]int)

youchen

package main

import "golang.org/x/tour/pic"

func Pic(dx, dy int) [][]uint8 {
	pic := make([][]uint8, dy)

	for i := range pic {
		pic[i] = make([]uint8, dx)

youchen

package main

import (
	"fmt"
)

func Sqrt(x float64) float64 {
	z := 1.0
	it := 0
	

youchen

# source: https://morimori.tokyo/2015/10/adjusting-timestamps-from-a-gopro/
# 
#!/usr/bin/env bash

FILES=$(ls *.MP4) # FILES=$(ls *.{JPG,MP4})

for filename in $FILES
do
	# Offset is 974 days 10 hours 39 minutes
	NEWDATE=$(date -j -v+974d -v+10H -v+39M -f "%m/%d/%Y %H:%M:%S" "$(GetFileInfo -m $filename)" +"%m/%d/%Y %H:%M:%S")

youchen

import java.util.*;
/**
 * 1.1 Implement an algorithm to determine if a string has all unique characters. 
 * 	What if you cannot use additional data structures? 
 * 
 * idea: Make a hash table to store the character.
 * 	 The key is the position of the char in the given string;
 * 	 The value is the char in the given string.
 * By adding the char of the given string into the hash table, first check
 * 	 if the hash table has already contain the value(the particular char in String).