adding leetcode folder

Leetcode/findandreplace.java

@@ -0,0 +1,43 @@
+package Leetcode;
+
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+
+public class findandreplace {
+
+    public static void main(String[] args) {
+        findandreplace far = new findandreplace();
+        String arr[] = {"abc","deq","mee","aqq","dkd","ccc"};
+        List<String> op = far.findAndReplacePattern(arr, "abb");
+        System.out.println(op);
+    }
+
+        public List<String> findAndReplacePattern(String[] words, String pattern) {
+
+       List<String> res = new ArrayList<String>();
+
+            for(String str: words){
+                if(match(str, pattern)){
+                    res.add(str);
+                }
+            }
+            return res;
+        }
+
+        public Boolean match(String str, String pattern){
+
+            HashMap<Character, Character> hm = new HashMap<>();
+            for(int i = 0; i < str.length(); i++){
+                if(!hm.containsKey(pattern.charAt(i))){
+                    if(hm.containsValue(str.charAt(i))){
+                        return false;
+                    }
+                    hm.put(pattern.charAt(i), str.charAt(i));
+                } else if(hm.get(pattern.charAt(i)) != str.charAt(i)){
+                    return false;
+                }
+            }
+            return true;
+        }
+    }

arrayproject/averagetemp.java

@@ -0,0 +1,28 @@
+package arrayproject;
+
+import java.util.Scanner;
+
+public class averagetemp {
+
+    public static void main(String[] args) {
+        Scanner scanner = new Scanner(System.in);
+        System.out.println("How many Days temperature?");
+        int numberOfDays = scanner.nextInt();
+        int[] temp = new int[numberOfDays];
+        int average =0;
+        int sum=0;
+        System.out.println("Enter the temparature of that many days");
+        for(int i=0;i<numberOfDays;i++){
+            temp[i]=scanner.nextInt();
+            sum+=temp[i];
+        }
+
+        average = sum/numberOfDays;
+
+        System.out.println("The average temparature is "+average);
+        for(int i=0;i<numberOfDays;i++){
+            if(temp[i]>average) System.out.println("Day "+(i+1)+"'s temperature is above average");
+        }
+
+    }
+}