Advent of code is started
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Private leaderboard code: 3233550-02bd41fd (So we can compete and learn together)
My day1 of Advent of code 2023. I done it on java. If anyone have to optimise this code, that are welcome to do so.
public static void main(String[] args) throws IOException {
// i gave test case through .txt file. Set the path on dir string
String s = "",dir="/home/PC/Music/AdventOfCode/code1.txt";
BufferedReader br = new BufferedReader(new FileReader(dir));
int sum=0;
while((s =br.readLine()) !=null) // read th file from the directory
{
int i=0;
char first='\0',last='\0';
while(i < s.length()) // traverse the string from 0 to n
{
if(Character.isDigit(s.charAt(i))) // the digit(0-1) comes
{
if(first == '\0') // first time it store the value in first variable, it is one time use
first=s.charAt(i);
last=s.charAt(i); // if the char is digit(0-9) it alwasys store on last
}
i++;
}
System.out.println(first+" "+last);
sum+= Integer.parseInt(String.valueOf(first)+String.valueOf(last));
}
System.out.println(sum);
br.close();
}
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My day1 part2 of Advent of code 2023. I done it on java.
public static void main(String[] args) throws IOException {
// i gave test case through .txt file. Set the path on dir string
String s = "",dir="/home/PC/Music/AdventOfCode/code1.txt";
BufferedReader br = new BufferedReader(new FileReader(dir));
int sum=0;
while((s =br.readLine()) !=null) // read th file from the directory
{
int i=0;
char first='\0',last='\0';
while(i < s.length()) // traverse the string from 0 to n
{
if(Character.isDigit(s.charAt(i))) // the digit(0-1) comes
{
if(first == '\0') // first time it store the value in first variable, it is one time use
first=s.charAt(i);
last=s.charAt(i); // if the char is digit(0-9) it alwasys store on last
}
i++;
}
System.out.println(first+" "+last);
sum+= Integer.parseInt(String.valueOf(first)+String.valueOf(last));
}
System.out.println(sum);
br.close();
}
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Hi all,
I too started solving advent of code yesterday.
Joined the above provate leaderboard as well.
Let’s have fun together 
Let’s complete all 25 days challenges 
I have also started as well 
Adventofcode இது என்ன வென்று கொஞ்சம் கூறுங்களேன் ? சகோதரர்களே🤔
இது வருடா வருடம் நடைபெறும் நிரல் எழுத்துப்போட்டி (Coding event). வரும் டிசம்பர் மாதத்தில் நடைபெரும். நீங்களும் பங்கு பெற்று பயன் அடையலாம்.
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தகவலுக்கு நன்றி . இந்த வருடம் நானும் அதில் கலந்து கொள்வேன் சகோதரரே 
You can do the past year problems anytime, don’t have to wait exactly for this year problem sets.
Solving previous year problems will help you to prepare for this upcoming year sets.
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