Scala<产生min-max之间的随机数>

本文介绍了一段用于生成1到35范围内随机整数的代码实现。使用了(newRandom).nextInt方法来产生一个大于等于0且小于指定上限的随机数。

下面的代码是产生1-35范围内的整数

   while (true) {
      var a = 1 + (new Random).nextInt((35 - 1) + 1)
      if (a <= 0 || a >= 36)
        print(a)
    }


(new Random).nextInt(n)会产生一个大于等于0且小于n的整数

<?xml version="1.0" encoding="UTF-8"?> 4.0.0 <groupId>org.example</groupId> <artifactId>scala_tutorial</artifactId> <version>1.0-SNAPSHOT</version> <properties> <maven.compiler.source>8</maven.compiler.source> <maven.compiler.target>8</maven.compiler.target> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <scala.version>2.12.11</scala.version> <spark.version>3.1.1</spark.version> <hadoop.version>3.2.4</hadoop.version> </properties> <dependencies> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.33</version> </dependency> <!-- Scala Library --> <dependency> <groupId>org.scala-lang</groupId> <artifactId>scala-library</artifactId> <version>${scala.version}</version> </dependency> <!-- Spark Core --> <dependency> <groupId>org.apache.spark</groupId> <artifactId>spark-core_2.12</artifactId> <version>${spark.version}</version> </dependency> <!-- Spark SQL --> <dependency> <groupId>org.apache.spark</groupId> <artifactId>spark-sql_2.12</artifactId> <version>${spark.version}</version> </dependency> <!-- Spark Hive Support --> <dependency> <groupId>org.apache.spark</groupId> <artifactId>spark-hive_2.12</artifactId> <version>${spark.version}</version> </dependency> <!-- Hadoop Client --> <dependency> <groupId>org.apache.hadoop</groupId> <artifactId>hadoop-client</artifactId> <version>${hadoop.version}</version> </dependency> </dependencies> <build> <plugins> <!-- Scala Compiler Plugin --> <plugin> <groupId>net.alchim31.maven</groupId> <artifactId>scala-maven-plugin</artifactId> <version>4.8.1</version> <executions> <execution> <goals> <goal>compile</goal> <goal>testCompile</goal> </goals> </execution> </executions> <configuration> <scalaVersion>${scala.version}</scalaVersion> </configuration> </plugin> <!-- Maven Compiler Plugin --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.11.0</version> <configuration> <source>8</source> <target>8</target> </configuration> </plugin> <!-- Maven Assembly Plugin for creating fat JAR --> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-assembly-plugin</artifactId> <version>3.6.0</version> <configuration> <descriptorRefs> <descriptorRef>jar-with-dependencies</descriptorRef> </descriptorRefs> </configuration> <executions> <execution> <id>make-assembly</id> <phase>package</phase> <goals> <goal>single</goal> </goals> </execution> </executions> </plugin> </plugins> </build> 版本不变,给我调整个能用的
最新发布
11-22
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