尝试在这个表中打印'Spotted'为真的条目数

我正在尝试学习Lua，我的一个朋友给了我一些代码来帮助我学习表和表的操作，我目前遇到的问题是在他给我的这个表中完成以下操作：

1.编写一个程序来计算有多少个斑点狗在表中。 2.编写一个程序来计算有多少个每个品种。 3.编写一个程序来反转所有名为'tblSpottedDogs'的新表中的'Spotted'

他给了我关于3的一些提示，我将在接下来的时候尝试一下，所以现在问题更多的是1和2。

local tblDogs = {
    {
        ['Name'] = 'Jeffey',
        ['Breed'] = '杰克罗素梗',
        ['Colour'] = '白色和黑色',
        ['Spotted'] = true
    },
    {
        ['Name'] = '斑点',
        ['Breed'] = '杰克罗素梗',
        ['Colour'] = '白色和棕色',
        ['Spotted'] = false
    },
    {
        ['Name'] = 'Jeffey',
        ['Breed'] = '杰克罗素梗',
        ['Colour'] = '白色和红色',
        ['Spotted'] = true
    },
    {
        ['Name'] = 'Snitzel',
        ['Breed'] = '达克斯猎犬',
        ['Colour'] = '棕色',
        ['Spotted'] = false
    },
    {
        ['Name'] = 'Hugo',
        ['Breed'] = '达克斯猎犬',
        ['Colour'] = '深棕色',
        ['Spotted'] = false
    },
    {
        ['Name'] = 'Freedum',
        ['Breed'] = '鹰',
        ['Colour'] = '棕色羽毛',
        ['Spotted'] = true
    },
    {
        ['Name'] = 'Grrrrrrrrrrrrrrrrrrrrrrrr',
        ['Breed'] = '熊',
        ['Colour'] = '棕色',
        ['Spotted'] = false
    },
    {
        ['Name'] = '臭臭',
        ['Breed'] = '臭鼬',
        ['Colour'] = '白色和黑色',
        ['Spotted'] = false
    },
    {
        ['Name'] = 'Gary',
        ['Breed'] = '金毛犬',
        ['Colour'] = '金黄色',
        ['Spotted'] = false
    },
    {
        ['Name'] = '臭臭',
        ['Breed'] = '帽子猫',
        ['Colour'] = '猫',
        ['Spotted'] = false
    }
}