Where did you place this code?: double[] arr = Arrays.stream(aList).asDoubleStream().toArray(); Java code: import java.util.Scanner; public class Main { /*I can't find how to turn the aList[] array values into double values. Should I do this in the method definitions or main method? */ public void toFahr(int[] array){ } // how do I write a mutator method using the values from the aList[i] array? public static double toCelsius(int[] array){ double fahr; //fahrenheit value double celsius; return celsius = (fahr - 32)/1.8; } // Can I use the fahr variable from toCelsius method & apply to toKelvin method? public double toKelvin( ){ double kelv; return kelv=(fahr -32)/1.8 + 273.15; } //use selectionSort(numbers) later on in main method to call this public static void selectionSort(int [] numbers) { int i; int j; int indexSmallest; int temp; for (i = 0; i < numbers.length - 1; ++i) { // Find index of smallest remaining element indexSmallest = i; for (j = i + 1; j < numbers.length; ++j) { if (numbers[j] < numbers[indexSmallest]) { indexSmallest = j; } } // Swap numbers[i] and numbers[indexSmallest] temp = numbers[i]; numbers[i] = numbers[indexSmallest]; numbers[indexSmallest] = temp; } /* fill out the rest once I get the above public void avg() { } public void high () { } public void low() { } public void aboveAvg( ) { } public void equalAvg() { } public void belowAvg() { } public void stdDev() { } */ public static void main(String[] args) { // write your code here Scanner scnr = new Scanner(System.in); int i = 0; int j = 0; int num,numTemp; System.out.print("How many numbers do you want to enter? : "); num = scnr.nextInt(); int aList[] = new int[num]; //store array from user's input System.out.println("Please enter " + num + " integer from 1 to 35."); for(i=0;i35) { System.out.println(aList[j]+" is not correct!"); while(true) { System.out.println("Please enter within the range of 1-35 or this cycle will loop forever"); numTemp = scnr.nextInt(); if(numTemp>0 && numTemp<36) { aList[j] = numTemp; break; } } } } for(j = 0;j
My issue:
Where did you place this code?:
double[] arr = Arrays.stream(aList).asDoubleStream().toArray();
Java code:
import java.util.Scanner;
public class Main {
/*I can't find how to turn the aList[] array values into double values.
Should I do this in the method definitions or main method? */
public void toFahr(int[] array){
}
// how do I write a mutator method using the values from the aList[i] array?
public static double toCelsius(int[] array){
double fahr; //fahrenheit value
double celsius;
return celsius = (fahr - 32)/1.8;
}
// Can I use the fahr variable from toCelsius method & apply to toKelvin method?
public double toKelvin( ){
double kelv;
return kelv=(fahr -32)/1.8 + 273.15;
}
//use selectionSort(numbers) later on in main method to call this
public static void selectionSort(int [] numbers) {
int i;
int j;
int indexSmallest;
int temp;
for (i = 0; i < numbers.length - 1; ++i) {
// Find index of smallest remaining element
indexSmallest = i;
for (j = i + 1; j < numbers.length; ++j) {
if (numbers[j] < numbers[indexSmallest]) {
indexSmallest = j;
}
}
// Swap numbers[i] and numbers[indexSmallest]
temp = numbers[i];
numbers[i] = numbers[indexSmallest];
numbers[indexSmallest] = temp;
}
/* fill out the rest once I get the above
public void avg() {
}
public void high () {
}
public void low() {
}
public void aboveAvg( ) {
}
public void equalAvg() {
}
public void belowAvg() {
}
public void stdDev() {
}
*/
public static void main(String[] args) {
// write your code here
Scanner scnr = new Scanner(System.in);
int i = 0;
int j = 0;
int num,numTemp;
System.out.print("How many numbers do you want to enter? : ");
num = scnr.nextInt();
int aList[] = new int[num]; //store array from user's input
System.out.println("Please enter " + num + " integer from 1 to 35.");
for(i=0;i<num;i++) {
aList[i] = scnr.nextInt();
}
for(j = 0;j<num;j++) {
if(aList[j]<1 || aList[j]>35) {
System.out.println(aList[j]+" is not correct!");
while(true) {
System.out.println("Please enter within the range of 1-35 or this cycle will loop forever");
numTemp = scnr.nextInt();
if(numTemp>0 && numTemp<36) {
aList[j] = numTemp;
break;
}
}
}
}
for(j = 0;j<num;j++) {
System.out.print(aList[j]+" ");
}
}
}
Expert Answer
We can convert the array of integers into double values in the main method. This helps to reduce the need of toFahr() method that was not static as well.
1) Here, the array is given and you need their double values in different scales. We can simply create a double variable for that scale and store that in the new array.
Also, toFahr() is not necessary to use. We can simply convert the given int array into a double array in the main program and then we can use that double array for other methods as well. The code to convert the given int array into double in the main function is as:
double[] arr = Arrays.stream(aList).asDoubleStream().toArray();
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