update

Author: Blooverh

LeetCode/Grind169/LinkedLists/SwapNodesInPairs_24.java

@@ -0,0 +1,31 @@
+package Grind169.LinkedLists;
+
+public class SwapNodesInPairs_24 {
+    public class ListNode {
+        int val;
+        ListNode next;
+        ListNode() {}
+        ListNode(int val) { this.val = val; }
+        ListNode(int val, ListNode next) { this.val = val; this.next = next; }
+    }
+
+    public static void main(String[] args) {
+        
+    }
+
+    public static ListNode swapPairs(ListNode head) {
+        ListNode temp; 
+        if(head ==null ){
+            return null;
+        }else if(head != null  && head.next ==null){
+            return head;
+        }else{
+            temp=head.next;
+            head.next=temp.next;
+            temp.next=head;
+            head=temp;
+            head.next.next= swapPairs(head.next.next);
+            return head;
+        }
+    }
+}

LeetCode/Grind169/Stacks/BackSpaceStringCompare_844.java

@@ -0,0 +1,21 @@
+package Grind169.Stacks;
+
+import java.util.Scanner;
+import java.util.Stack;
+
+public class BackSpaceStringCompare_844 {
+    public static void main(String[] args) {
+        Scanner kbr= new Scanner(System.in);
+        System.out.println("Type 1st string: ");
+        String s = kbr.nextLine();
+        System.out.println("Enter 2nd String: ");
+        String t= kbr.nextLine();
+
+        boolean check= backspaceCompare(s, t);
+        System.out.println(check);
+    }
+
+    public static boolean backspaceCompare(String s, String t) {
+        
+    }
+}