Programming Fundamentals/Arrays/Java
arrays.java
[edit | edit source]// This program uses arrays to display temperature conversion tables // and temperature as an array subscript to find a given conversion. // // References: // https://www.mathsisfun.com/temperature-conversion.html // https://en.wikibooks.org/wiki/Java_Programming import java.util.*; class arrays { private static Scanner input = new Scanner(System.in); public static void main(String[] args) { double[] c; double[] f; c = buildC(100); f = buildF(212); displayArray("C", c); displayArray("F", f); findTemperature(c, f); } private static double[] buildC(int size) { double[] c = new double[size + 1]; int index; double value; for (index = 0; index <= size; index += 1) { value = (double) index * 9 / 5 + 32; c[index] = value; } return c; } private static double[] buildF(int size) { double[] f = new double[size + 1]; int index; double value; for (index = 0; index <= size; index += 1) { value = (double) (index - 32) * 5 / 9; f[index] = value; } return f; } private static void displayArray(String name, double[] array) { int index; for (index = 0 ; index <= array.length - 1 ; index += 1) { System.out.println(name + "[" + index + "] = " + array[index]); } } private static void findTemperature(double[] c, double[] f) { int temp; int size; size = minimum(c.length, f.length); do { System.out.println("Enter a temperature between 0 and " + Integer.toString(size - 1)); temp = input.nextInt(); } while (temp < 0 || temp > size - 1); System.out.println(Integer.toString(temp) + "° Celsius is " + c[temp] + "° Fahrenheit"); System.out.println(Integer.toString(temp) + "° Fahrenheit is " + f[temp] + "° Celsius"); } private static int minimum(int value1, int value2) { int result; if (value1 < value2) { result = value1; } else { result = value2; } return result; } } Try It
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