- [Java 9 中的字符串(String)压缩](https://www.ossez.com/t/java-9-string/14024)
This commit is contained in:
parent
08abc1855a
commit
b9bf30f350
|
@ -9,17 +9,13 @@ public class CompactStringDemo {
|
||||||
|
|
||||||
public static void main(String[] args) {
|
public static void main(String[] args) {
|
||||||
long startTime = System.currentTimeMillis();
|
long startTime = System.currentTimeMillis();
|
||||||
List strings = IntStream.rangeClosed(1, 10_000_000)
|
List strings = IntStream.rangeClosed(1, 10_000_000).mapToObj(Integer::toString).collect(toList());
|
||||||
.mapToObj(Integer::toString).collect(toList());
|
|
||||||
long totalTime = System.currentTimeMillis() - startTime;
|
long totalTime = System.currentTimeMillis() - startTime;
|
||||||
System.out.println("Generated " + strings.size() + " strings in "
|
System.out.println("Generated " + strings.size() + " strings in " + totalTime + " ms.");
|
||||||
+ totalTime + " ms.");
|
|
||||||
|
|
||||||
startTime = System.currentTimeMillis();
|
startTime = System.currentTimeMillis();
|
||||||
String appended = (String) strings.stream().limit(100_000)
|
String appended = (String) strings.stream().limit(100_000).reduce("", (left, right) -> left.toString() + right.toString());
|
||||||
.reduce("", (left, right) -> left.toString() + right.toString());
|
|
||||||
totalTime = System.currentTimeMillis() - startTime;
|
totalTime = System.currentTimeMillis() - startTime;
|
||||||
System.out.println("Created string of length " + appended.length()
|
System.out.println("Created string of length " + appended.length() + " in " + totalTime + " ms.");
|
||||||
+ " in " + totalTime + " ms.");
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
Loading…
Reference in New Issue