public class Main { public static int ElementsAndIndices(int[] arr) { if (arr == null || arr.length == 0) { return -1; } int count = 0; for (int i = 0; i < arr.length; i++) { if (arr[i] == i) { count++; } } return count; } public static void main(String[] args) { int[] arr = {10, 1, 12, 3, 5, 8, 9, 7, 12, 23}; System.out.println(ElementsAndIndices(arr)); // Output: 3 int[] arr2 = {-3, 0, 1, 3, 5, 7}; System.out.println(ElementsAndIndices(arr2)); // Output: 1 } } :6: error: cannot find symbol int result = ElementsAndIndices(arr); ^ symbol: method ElementsAndIndices(int[]) location: class SolutionClass 1 error it is showing this error

public class SolutionClass { public static void main(String[] args) { int[] arr = {10, 1, 12, 3, 5, 8, 9, 7, 12, 23}; int result = Main.ElementsAndIndices(arr); System.out.println(result); // Output: 3 int[] arr2 = {-3, 0, 1, 3, 5, 7}; int result2 = Main.ElementsAndIndices(arr2); System.out.println(result2); // Output: 1 } } :10: error: class SolutionClass is already defined in package unnamed package public class SolutionClass { ^ :6: error: cannot find symbol int result = ElementsAndIndices(arr); ^ symbol: method ElementsAndIndices(int[]) location: class SolutionClass showing this error fix it

public class Test{     public static int x = 20;     public static void fun(int arr[], int x){          while(x > arr.length){               x = x / 2;          }          for(int i=0;i<arr.length;i++){               arr[i] = x;          }     }     public static void main(String[] args) {          int[] a = {2,3,5,7,11};          int x = 100;          fun(a,x);          for(int i=0;i<a.length;i++){               System.out.print(a[i]+ " ");          }          System.out.println(x);     }}

public static void main(String[] args){  for (int i = 3; i <= 7; i++) {int num;if(i%2 == 0){num = 0;  for (int j = 1; j <= 4; j++)  {  System.out.print(num);  num = (num == 0)? 3 : 2;  }} else {num = 1;  for (int j = 1; j <= 3; j++){System.out.print(num);num = (num == 0)? 2 : 5;}  }  System.out.println();}}

Problem Statement You are given a function, static int ElementsAndIndices(int[] arr){} The function takes an integer array 'arr' of size 'n' as its arguments. Implement the function to find and return the number of array elements which are equal to their index value in array i.e. arr[k] = k, 0 <= k < n. Note: Indexing starts from 0. Return -1 if 'arr' is empty or None in case of python Example: Input: 10 1 12 3 5 8 9 7 12 23 Output: 3 Explanation: Index Element 0 10 1 1 2 12 3 3 4 5 5 8 6 9 7 7 8 12 9 23 Elements at index {1, 3, 7} are equal to their index values {1, 3, 7} respectively. Since, these are 3 elements, thus, output is 3. The custom input format for the above case: 10 10 1 12 3 5 8 9 7 12 23 (The first line represents the size of the array, the second line represents the elements of the array) Sample input -3 0 1 3 5 7 Sample Output 1 The custom input format for the above case: 6 -3 0 1 3 5 7 (The first line represents the size of the array, the second line represents the elements of the array) Instructions : This is a template based question, DO NOT write the "main" function. Your code is judged by an automated system, do not write any additional welcome/greeting messages. "Save and Test" only checks for basic test cases, more rigorous cases will be used to judge your code while scoring. Additional score will be given for writing optimized code both in terms of memory and execution time. Now let's start coding : Language: Java 17.0 Day Mode Read-only code below . . . 1 class SolutionClass { 2 public static void main(String[] args) throws java.lang.Exception { 3 //Input read from STDIN 4 int result = ElementsAndIndices(arr); 5 //Value in result printed to STDOUT 6 } 7 } 8 ​ Write your code below . . . 9 static int ElementsAndIndices(int[] arr) throws java.lang.Exception 10 { 11 /* Write your code here. */ 12 } 13 ​ 14 ​ 15 ​

public class Main { public static void main(String args[]) { int arr[] = {1, 2, 3}; int m = arr.length; int n = 10; System.out.println( countWays(arr, m, n)); } static long countWays(int S[], int m, int n) { long[] table = new long[n+1]; table[0] = 1; for (int i=0; i<m; i++) for (int j=S[i]; j<=n; j++) table[j] += table[j-S[i]]; return table[n]; } } i need 14 as output