Sorting and Binary search using Java

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离开以前
离开以前 2020-12-18 17:17

I was asked to sort and search an array. The sorting the array was simple and my code worked but then whenever I try to call the binary search method it works for the first

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  •  既然无缘
    2020-12-18 17:36

    1. Take Array From User
    2. Sort Array using Build-in Function of Java...
    3. then Search Element using Binary Search....

          import java.lang.reflect.Array;
          import java.util.Arrays;
          import java.util.Scanner;
      
          class BinarySearch
          {
             public static void main(String args[])
             {
                int array[];
      
                Scanner input = new Scanner(System.in);
                System.out.println("Enter number of elements:");
               int Size_Of_Array = input.nextInt(); 
      
      
                array = new int[Size_Of_Array];
      
                System.out.println("Enter " + Size_Of_Array + " integers");
      
                for (int counter = 0; counter < Size_Of_Array; counter++)
                    array[counter] = input.nextInt();
      
                Arrays.sort(array);
                System.out.println("Sorting Array is :-");
                for (int counter = 0; counter < Size_Of_Array; counter++)
                    System.out.println(array[counter]);
      
                System.out.println("Enter the search value:");
                int  Searching_item = input.nextInt();
      
                int First_Index=0;
                int Last_Index=Size_Of_Array-1;
                int Middle_Index=(First_Index+Last_Index)/2;
      
                while(First_Index <= Last_Index)
                {
                    if(array[Middle_Index] < Searching_item)
                    {
                        First_Index=Middle_Index+1;
                    }
                    else if ( array[Middle_Index] == Searching_item ) 
                    {
                      System.out.println(Searching_item + " found at location " + (Middle_Index + 1) + ".");
                      break;
                    }
                    else
                    {
                        Last_Index = Middle_Index - 1;
                    }
                    Middle_Index = (First_Index + Last_Index)/2;
      
                    if ( First_Index > Last_Index )
                    {
                        System.out.println(Searching_item + " is not found.\n");
                    }
                }
              }
          }
      

      Result of BinarySearch

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