feat: Add leetcode example on sorting. Level easy

JavaDsaWithTest/src/main/java/org/practice/dsa/leet_code/easy/sorting/SortSquares.java

@@ -0,0 +1,20 @@
+package org.practice.dsa.leet_code.easy.sorting;
+
+import java.util.Arrays;
+
+public class SortSquares {
+    public static void main(String[] args) {
+        int[] arr = {-4, -1, 0, 3, 10};
+        System.out.println(Arrays.toString(sortedSquares(arr)));
+    }
+
+    public static int[] sortedSquares(int[] arr) {
+        int[] result = new int[arr.length];
+        for (int i = 0; i < arr.length; i++) {
+            result[i] = arr[i]*arr[i];
+        }
+        System.out.println("Squares before sorting:"+Arrays.toString(result));
+        Arrays.sort(result);
+        return result;
+    }
+}