1 . Write a method, called isSorted, that takes an array of integers as input, a

Question

1. Write a method, called isSorted, that takes an array of integers as input, and returns true if the array is sorted in ascending order (e.g., [2,3,7,8,22,59]), and false otherwise.

2. Write a method, called find, that takes and array of integers a and an integer x as input, and returns true if x is in a

3. Write a method, called second Min, that takes an array of integers as input, and finds the second smallest element of the array. (Debug hint: once you finish writing your code, test it on array {10,1,2,3,4} and see if the result is correct)

In java and can you please explain how to do each one.

Explanation / Answer

Question 1

Answer:

public static boolean isSorted(int a[]){
       if(a.length ==0 || a.length == 1){
           return true;
       }
      
       for(int i=0; i<a.length-1; i++){
           if(a[i] >= a[i+1])
               return false;
       }
       return true;
   }

Question 2

Answer:

   public static boolean find(int a[], int n){
       for(int i=0; i<a.length; i++){
           if(a[i] == n){
               return true;
           }
       }
       return false;
   }

Question 3

Answer:

public static int secondMin(int arr[]){
       int firstMin = arr[0];
       int secondMin = arr[0];
       for(int i=0; i<arr.length; i++){
           if (arr[i] < firstMin) {
               secondMin = firstMin;
firstMin = arr[i];
} else if (arr[i] < secondMin && arr[i] > firstMin) {
   secondMin = arr[i];
}  
       }
       return secondMin;
   }

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