Swift分数统计-优快云博客

本文通过Swift语言实现了一组分数的统计，包括求和、平均值、最大值和最小值，并使用了不同的循环方式来遍历数组。

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//
//  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");
}

swift -控制语句