swift -控制语句

//
//  main.swift
//  控制语句-03
//

import Foundation

println("Hello, World!")
//定义一个分数
var score = 80;
/**
*  定义一个数组
*/
var scoreArr = [90,99,45,89,67,54];

var minScore = 0;
var maxScore = 0;
var avgScore = 0.0;
var sumScore = 0.0;
var count = scoreArr.count;

//循环所有的yuans

for s in scoreArr
{
sumScore = sumScore + Double(s);
println("s is \(s)");
if(minScore == 0||minScore > s){
minScore = s;
}
if(maxScore == 0||maxScore < s)
{
maxScore = s;
}
}
avgScore = sumScore/Double(count);
println("sumSocre is \(sumScore) avgScore is \(avgScore)");
println("maxScore is \(maxScore) minScore is \(minScore)");

for(var i = 0; i < count; i++){
var s = scoreArr[i];//取得第iyuans
println("for ...i\(i) s = \(s)");
if(minScore == 0||minScore > s){
minScore = s;
}
if(maxScore == 0||maxScore < s)
{
maxScore = s;
}
}
avgScore = sumScore/Double(count);
println("sumSocre is \(sumScore) avgScore is \(avgScore)");
println("maxScore is \(maxScore) minScore is \(minScore)");

var index = 0;
do{
if(index >= count){
break;
}
var s = scoreArr[index];
println("do-while s[\(index)]=\(s)");
}while(++index < count);

index = 0;
while(index < count)
{
index++;
if(index >= count){
break;
}
var s = scoreArr[index];
println("while s[\(index)] = \(s)");
}

//switch 之前的switch会穿透
let appType = "ios";
switch appType
{
case "ios":
println("ios开发");
fallthrough;//让往下走
case "Android":
println("Android开发");
case "Java":
println("Java 开发");
default:
println("没有任何匹配");
}