Java线性搜索

public class Tester {

   public static int linearSearch(int[] arr, int element) {

      for (int i = 0; i < arr.length; i++) {

         if (arr[i] == element) {

            return i;

         }

      }

      return -1;

   }

   public static void main(String a[]) {

      int[] array = { 10, 20, 30, 50, 70, 90 };

      int element = 50;

      int index = linearSearch(array, element);

      if (index != -1) {

         System.out.println(element + " present at index: " +index);

      } else {

         System.out.println(element + " is not present.");

      }

   }

}