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//sample code to write 100 random ints to a file, 1 per lineimport java.io.PrintStream;import java.io.IOException;import java.io.File;import java.util.Random;public class WriteToFile {public static void main(String[] args) {try {PrintStream writer = new PrintStream(new File("randInts.txt"));Random r = new Random();final int LIMIT = 100;for (int i = 0; i < LIMIT; i++) {writer.println(r.nextInt());}writer.close();} catch (IOException e) {System.out.println("An error occured while trying to write to the file");}}}
import java.util.Arrays;public class LongestIncreasingSubsequence {public int lengthOfLIS(int[] nums) {if (nums.length == 0) {return 0;}int[] dp = new int[nums.length];Arrays.fill(dp, 1); // Initialize all elements in dp array to 1, as each element itself is a valid subsequence of length 1.int maxLength = 1; // Initialize the maximum length to 1, considering a single element as the sequence.for (int i = 1; i < nums.length; i++) {for (int j = 0; j < i; j++) {if (nums[i] > nums[j]) {dp[i] = Math.max(dp[i], dp[j] + 1); // If nums[i] is greater than nums[j], update the longest subsequence length ending at i.}}maxLength = Math.max(maxLength, dp[i]); // Update the maximum length if needed.}return maxLength;}public static void main(String[] args) {LongestIncreasingSubsequence lis = new LongestIncreasingSubsequence();int[] nums = {10, 9, 2, 5, 3, 7, 101, 18};int result = lis.lengthOfLIS(nums);System.out.println("Length of the Longest Increasing Subsequence: " + result); // Output: 4}}
public class Solution {public ListNode mergeTwoLists(ListNode l1, ListNode l2) {ListNode head = new ListNode(0);ListNode handler = head;while(l1 != null && l2 != null) {if (l1.val <= l2.val) {handler.next = l1;l1 = l1.next;} else {handler.next = l2;l2 = l2.next;}handler = handler.next;}if (l1 != null) {handler.next = l1;} else if (l2 != null) {handler.next = l2;}return head.next;}}
import javax.mail.*;import javax.mail.internet.*;import java.util.*;public void postMail( String recipients[ ], String subject, String message , String from) throws MessagingException{boolean debug = false;//Set the host smtp addressProperties props = new Properties();props.put("mail.smtp.host", "smtp.example.com");// create some properties and get the default SessionSession session = Session.getDefaultInstance(props, null);session.setDebug(debug);// create a messageMessage msg = new MimeMessage(session);// set the from and to addressInternetAddress addressFrom = new InternetAddress(from);msg.setFrom(addressFrom);InternetAddress[] addressTo = new InternetAddress[recipients.length];for (int i = 0; i < recipients.length; i++){addressTo[i] = new InternetAddress(recipients[i]);}msg.setRecipients(Message.RecipientType.TO, addressTo);// Optional : You can also set your custom headers in the Email if you Wantmsg.addHeader("MyHeaderName", "myHeaderValue");// Setting the Subject and Content Typemsg.setSubject(subject);msg.setContent(message, "text/plain");Transport.send(msg);}
class main {public static boolean findDuplicates(int[] nums) {for(int i = 0; i < nums.length; i++) {for(int j = 0; j < i; j++) {if(nums[i] == nums[j]) {return true;}}}return false;}public static void main(String[] args) {int[] myArray = {1,3};System.out.println(findDuplicates(myArray));}}
public class Factorial{public static void main(String[] args){ final int NUM_FACTS = 100;for(int i = 0; i < NUM_FACTS; i++)System.out.println( i + "! is " + factorial(i));}public static int factorial(int n){ int result = 1;for(int i = 2; i <= n; i++)result *= i;return result;}}