每日一练74——Java Kata Twist示例(8kyu)
2018-08-14 本文已影响0人
砾桫_Yvan
题目
这是示例kata的简单转折(在学习如何创建自己的kata时由Codewars提供)。
将值“codewars”添加到数组websites
1,000次。
String[] websites = {};
return websites;
测试用例:
import org.junit.Test;
import static org.junit.Assert.assertEquals;
public class KataExampleTwistTest {
@Test
public void test(){
String[] websites = KataExampleTwist.kataExampleTwist();
assertEquals("The array is still empty", true, websites.length > 0);
assertEquals("The array does not equal 1,000", true, websites.length == 1000);
boolean allCodewars = true;
for (int i = 0; i < websites.length; i++) if (!"codewars".equals(websites[i])) allCodewars = false;
assertEquals("Every element in the array must contain the value \"codewars\"", true, allCodewars);
}
}
解题
My
public class KataExampleTwist
{
public static String[] kataExampleTwist()
{
String[] websites = new String[1000];
for (int i = 0; i < 1000; i++) {
websites[i] = "codewars";
}
return websites;
}
}
Other
import java.util.*;
public class KataExampleTwist
{
public static String[] kataExampleTwist()
{
String[] websites = new String[1000];
Arrays.fill(websites,"codewars");
return websites;
}
}
import java.util.Collections;
public class KataExampleTwist {
public static String[] kataExampleTwist() {
return Collections.nCopies(1000, "codewars").toArray(new String[0]);
}
}
后记
又学到 Arrays.fill(websites,"codewars");
一招。