SCALA常规练习A

package com.hengheng.scala

import scala.util.control.Breaks._
import scala.util.Random

object Application{
def main(args : Array[String]) {
println("Hello, World!")
println(addSayHelloFirst(5, 10))
val I = List(1, 2, 3)
I.map((i) => {
println("HI")
println(i + 9)
})

}
def addSayHelloFirst(i : Int, j : Int) : Int = {
println("Hello")
i + j
}
def add(i : Int, j : Int) = i + j
val add2 = add(2, _ : Int)
println(add2(99))
def devide(i : Int)(j : Int) : Int = i / j
val devideBy2 = devide(_ : Int)(2)
println(devideBy2(100))
var _100Devide = devide(100)(_ : Int)
println(_100Devide(10))
var k = 5
if(k > 10) {
println("k is more than 10.")
}
else if(k < 0) {
println("k is less than 0")
}
else {
println("k is between 1 and 10")
}
var i = 0
var sum = 0
while(i < 10) {
sum += i
i += 1
}
println(sum)
sum = 0
for (i <- 1 to 9) {
sum += i
}
println(sum)

breakable {
while(true) {
val r = new Random()
val i = r.nextInt(10)
println("i == " +i)
if(i == 5) {
break
}
}
}
}

　　输出：

101
50
10
k is between 1 and 10
45
45
i == 9
i == 0
i == 4
i == 9
i == 3
i == 1
i == 2
i == 1
i == 3
i == 5
Hello, World!
Hello
15
HI
10
HI
11
HI
12