Big update: Adding all advent of codes to same repo

AdventOfCode2020/day1/day1.java

@@ -0,0 +1,41 @@
+import java.util.Scanner;
+import java.io.File;
+import java.io.FileNotFoundException;
+
+class day1 {
+
+	public static void main(String[] args) {
+
+		try {
+
+			File myFile = new File("input.txt");
+			Scanner in = new Scanner(myFile);
+
+			int[] input = new int[200];
+			for (int i = 0; i < 200; i++) {
+				input[i] = Integer.parseInt(in.next());
+			}
+
+			for (int i = 0; i < 198; i++) {
+				for (int j = i + 1; j < 199; j++) {
+					//Following is for part1
+					//if (input[i] + input[j] == 2020) {
+						//System.out.println(input[i] * input[j]);
+					//}
+					for (int k = j + 1; k < 200; k++) {
+						if (input[i] + input[j] + input[k] == 2020) {
+							System.out.println(input[i] * input[j] * input[k]);
+						}
+					}
+				}
+			}
+
+			in.close();
+
+		} catch (FileNotFoundException e) {
+			System.out.println(e);
+		}
+
+	}
+
+}