Question

Q1. Write a Java program to do sequential search to find element 55 in array 10,20,35,45,55,65,75,85.

                                                                                                                                                                  

Q2.Write a Java program to find element 54 in array 45,41,65,53,76,90 using Binary Search. (Hint: Binary search is applied to sorted array elements)

Q4.   Write a java program to create array list subject

       - add English, Maths, Science to the list

       - add Computers at index 2

       - display first occurrence index of Maths

       - traverse the list using for each loop.

              

Q5. Write a java program to create an ArrayList of user-defined class forobjects (Employee): for id,name,age. The employee data are as follows for creating class objects.

1101    Aamna 25

1111    Amjad   30

Answer 1

public class SeqSearch {
        public static void main(String[] args) {
                int arr[]= { 10,20,35,45,55,65,75,85};
                int key=55;
                int res=linerSearch(arr,key);
                if(res==-1)
                        System.out.println(key+" does not exist in the array");
                else
                        System.out.println(key+" found at index "+res);
        }
        private static int linerSearch(int[] arr, int key) {
                // iterating through the array and checking if found returning the index
                for(int i=0;i<arr.length;i++)
                        if(arr[i]==key)
                                return i;
                return -1;
        }
}

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