Tuples

var str = "Hello, playground"

// lesson 2

typealias student = (name: String, grade: Int)

var grades:[student] = [student("Eran",100),student("Eli",95),student("Shlomi",15),student("Nissim",30),student("Ohad",93),student("Moshe",96),student("Danny",5),student("Yaron",78)]

var bottomGrade : Int = 100
var topGrade : Int = 0
var sum : Int = 0
var topName : String = ""
var bottomName : String = ""
var i = 0
var j = 0
var topList:[student] = []
var bottomList:[student] = []
for stud in grades {
    sum += stud.grade
    if stud.grade > 95 {
        topList.append(stud)
    }
    if stud.grade < 55 {
        bottomList.append(stud)
    }
    if stud.grade > topGrade {
        topGrade = stud.grade
        topName = stud.name
    }
    if stud.grade < bottomGrade {
        bottomGrade = stud.grade
        bottomName = stud.name
    }
}

print("\(topName) has the highest grade - \(topGrade)")
print("\(bottomName) has the lowest grade - \(bottomGrade)")
print("Failed students names:")
for s in bottomList {
    print(s)
}
print("Best students names:")
for s in topList {
    print(s)
}
print("average - \(sum/grades.count)")