Swift 100个入门实例程序之00-05

学习Swift过程所写，题目参考自《100道经典c语言编程题》，如有谬误请指出

0.定义一个包含姓名年龄分数的学生结构体并输出学生名称

struct student{
    var name:String
    var age:Int
    var year:Int
    var mark:Int
}

let stu1 = student(name : "John",age : 15,year : 1999,mark : 80)
let stu2 = student(name : "Seelea",age:14,year :2000,mark:99)
let stu3 = student(name : "More",age : 12,year:2002,mark:34)
print(stu1.name)
print(stu2.name)
print(stu3.name)

1.输入一行字符，分别统计出其中字母、空格、数字和其他字符的个数。

let inputstr:String = "hello 123456! all!!!"
var space = 0
var letter = 0
var number = 0
var other = 0
for char in inputstr.characters
{
     if char >= "A" && char <= "z"
    {
        letter += 1
    }
    else if char >= "0" && char <= "9"
    {
        number += 1
    }
    else if char == " "
    {
        space += 1
    }
    else
    {
        other += 1
    }
}
print("letter:\(letter)  number:\(number)  space:\(space)   other:\(other)")

2.输入两个正整数，m和n，求其最大公约数

var topic1_m:Int = 30
var topic1_n:Int = 125
var topic1_maxconvent:Int = 0
var topic1_mincommon:Int = 0
var count = 1
topic1_maxconvent = 1

if topic1_m > topic1_n
{
     while(count <= topic1_n)
    {
        if(topic1_m % count == 0 && topic1_n % count == 0)
        {
            topic1_maxconvent = count
        }
        count += 1
    }
}
else
{
     while(count <= topic1_m)
     {
        
        if(topic1_m % count == 0 && topic1_n % count == 0)
        {
            topic1_maxconvent = count
        }
        count += 1
    }
}

print("Input number m: \(topic1_m)  \r\nInput number n: \(topic1_n)")
print("Max convent: \(topic1_maxconvent)")

3.输入一个正整数求出它是几位数；输出原数和位数。

var wholenumber = 22325600
var count = 0
print("Origin number: \(wholenumber)")
while(wholenumber > 0)
{
    wholenumber /= 10
    count += 1
}
print("The integer bits:\(count)")

4.输入一个正整数，输出原数并逆序打印出各位数字。

var wholenumber = 22325600
var count = 0
print("Origin number: \(wholenumber)")
while(wholenumber > 0)
{
    print(wholenumber%10)
    wholenumber /= 10
    
}