Java Method with arrays
My assignment is to write a java method, smallestIndex, that takes as its parameters an int array and its size, and returns the index of the (first occurrence of the) smallest element in the array. Also, write a program to test your method.
my main method code is :
public class ArrayMethods {
//variables
static Scanner input = new Scanner(System.in);
//methods
public static int[] intArray(int size) {
if (size < 0)
size = 0;
int[] numbers = new int[size];
System.out.println("Please enter "+size+" integers separated by
spaces");
for (int i=0; i
public static double[] doubleArray(int size) {
if (size < 0)
size = 0;
double[] numbers = new double[size];
System.out.println("Please enter "+size+" numbers separated by
spaces");
for (int i=0; i
public static String[] stringArray(int size) {
if (size < 0)
size = 0;
String[] numbers = new String[size];
System.out.println("Please enter "+size+" words separated by spaces");
for (int i=0; i<numbers.length; i++)
numbers[i] = input.next();
return numbers;
}
public static void printArray(int[] data) {
for (int i=0; i<data.length; i++)
System.out.print(data[i] + " ");
System.out.println();
}
public static void printArray(double[] data) {
for (int i=0; i<data.length; i++)
System.out.print(data[i] + " ");
System.out.println();
}
public static void printArray(String[] data) {
for (int i=0; i<data.length; i++)
System.out.print(data[i] + " ");
System.out.println();
}
This is my test code:
public class SmallestIndex {
//variables
//methods
public static int SmallestIndex(int[]array, int size){
int currentSmallestIndex = 0;
int currentSmallValue = array[0];
for (int i=1; i<size; i++){
if (array[i] <currentSmallValue){
currentSmallValue = array [i];
currentSmallestIndex = i;
}
}
return currentSmallestIndex;
}
//main method
public static void main (String[] args){
//variables
final int SIZE = 20;
int [] numbers = new int [SIZE];
int SmallestIndex;
//prompt user for ints in an array and print
numbers = ArrayMethods.intArray(SIZE);
ArrayMethods.printArray(numbers);
SmallestIndex = SmallestIndex(numbers, SIZE);
System.out.println("The smallest index is" + SmallestIndex);
}
}
View Answers
April 11, 2011 at 10:51 AM
import java.util.*;
class ArrayExample11{
public static int SmallestIndex(int[]array, int size){
int currentSmallestIndex = 0;
int currentSmallValue = array[0];
for(int i=1; i<size; i++){
if(array[i] <currentSmallValue){
currentSmallValue = array [i];
currentSmallestIndex = i;
}
}
return currentSmallestIndex;
}
public static void main(String[] args){
Scanner input=new Scanner(System.in);
System.out.print("Enter array elements: ");
int size=5;
int array[]=new int[size];
for(int i=0;i<array.length;i++){
array[i]=input.nextInt();
}
System.out.println(SmallestIndex(array,size));
}
}
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