MedianTest.java
From Huben's Wiki
(Created page with "import java.util.*; class MedianTest { static public void main(String[] args) { test1(); test2(); test3(); } static public void test1() { ArrayLis...") |
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| + | <pre> | ||
| + | // The median method checks to see if there are an equal number of strings | ||
| + | // that would alphabetize before the test string and after the test string. | ||
| + | // If so, the test string is a median, and the median method should return true. | ||
| + | // Look at the methods of class String to see how to tell which would alphabetize first. | ||
| + | // You can write this with a for loop, and then try changing it to a for each loop. | ||
| + | |||
import java.util.*; | import java.util.*; | ||
class MedianTest | class MedianTest | ||
{ | { | ||
| + | |||
| + | static public boolean median(String s, ArrayList<String> a) | ||
| + | { | ||
| + | // INSERT YOUR CODE HERE AND FIX THE RETURN STATEMENT | ||
| + | return true; | ||
| + | } | ||
| + | |||
static public void main(String[] args) | static public void main(String[] args) | ||
{ | { | ||
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test2(); | test2(); | ||
test3(); | test3(); | ||
| + | test4(); | ||
} | } | ||
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ArrayList<String> a = new ArrayList<String>(); | ArrayList<String> a = new ArrayList<String>(); | ||
| − | |||
a.add("dog"); | a.add("dog"); | ||
| + | a.add("bat"); | ||
String s = "cat"; // is this a median value? | String s = "cat"; // is this a median value? | ||
boolean r = true; // expected result | boolean r = true; // expected result | ||
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boolean r = false; // expected result | boolean r = false; // expected result | ||
boolean m = median(s, a); // actual result | boolean m = median(s, a); // actual result | ||
| − | showResults(" | + | showResults("test2", m, r, s, a); |
} | } | ||
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boolean r = false; // expected result | boolean r = false; // expected result | ||
boolean m = median(s, a); // actual result | boolean m = median(s, a); // actual result | ||
| − | showResults(" | + | showResults("test3", m, r, s, a); |
} | } | ||
| + | |||
| + | static public void test4() | ||
| + | { | ||
| + | ArrayList<String> a = new ArrayList<String>(); | ||
| + | |||
| + | a.add("cat"); | ||
| + | a.add("cat"); | ||
| + | String s = "cat"; // is this a median value? | ||
| + | boolean r = true; // expected result | ||
| + | boolean m = median(s, a); // actual result | ||
| + | showResults("test4", m, r, s, a); | ||
| + | } | ||
| + | |||
| + | // Should have tests for [ant, cat, cat, dog, fox] cat being true, but complex to explain. | ||
static public void showResults(String name, boolean m, boolean r, String s, ArrayList<String> a) | static public void showResults(String name, boolean m, boolean r, String s, ArrayList<String> a) | ||
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System.out.println(" Inputs " + a + ", \"" + s + "\", expected " + r); | System.out.println(" Inputs " + a + ", \"" + s + "\", expected " + r); | ||
} | } | ||
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| − | + | ||
| − | + | ||
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| − | + | ||
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} | } | ||
| + | </pre> | ||
