Session 6

06-Loops/01-For/breakContinue.go

@@ -0,0 +1,18 @@
+package main
+
+func main() {
+
+	for i := 1; i <= 100; i++ {
+		if i%2 != 0 {
+			continue
+		}
+		println(i)
+	}
+
+	for i := 1; i <= 100; i++ {
+		if i == 50 {
+			break
+		}
+		println(i)
+	}
+}

06-Loops/01-For/example.go

@@ -0,0 +1,40 @@
+package main
+
+import "math/rand"
+
+type CreditCard struct {
+	CardNumber string
+	ExpireDate string
+	Cvv2       string
+	BankName   string
+}
+
+func main() {
+
+	cards := []CreditCard{
+		{CardNumber: "6037991725253535", ExpireDate: "01/01", Cvv2: "123", BankName: "Melli"},
+		{CardNumber: "5892101245457878", ExpireDate: "03/03", Cvv2: "245", BankName: "Sepah"},
+		{CardNumber: "6104981247653214", ExpireDate: "02/04", Cvv2: "741", BankName: "Mellat"},
+		{CardNumber: "6219861047653214", ExpireDate: "01/02", Cvv2: "1023", BankName: "Saman"},
+	}
+
+	for _, card := range cards {
+
+		if card.ExpireDate < "01/03" {
+			println("Your card", card.CardNumber, " is expired")
+			continue
+		}
+		var remainAmount = getBankAccountRemainAmount(card.CardNumber, card.ExpireDate)
+		println("Your card", card.CardNumber, " is valid, remain amount is ", remainAmount)
+	}
+
+}
+
+func getBankAccountRemainAmount(cardNumber string, expireDate string) int {
+	min := 1000000
+	max := 30000000
+	if expireDate < "01/03" {
+		return 0
+	}
+	return (rand.Intn(max-min) + min)
+}

06-Loops/01-For/fors.go

@@ -0,0 +1,93 @@
+package main
+
+func main() {
+	i := 0
+	//lst := []int{0, 1, 2, 3, 4, 5, 6, 7, 8, 9}
+	lst1 := []int{12, 15, 14, 13, 16, 17, 18, 19, 20, 21}
+	for {
+		println("Hello, world!")
+		break
+	}
+
+	for i < 10 {
+		println("Hello, world! ", i)
+		i++
+	}
+
+	for j := 0; j < 10; j++ {
+		println("Hello, world! ", j)
+	}
+
+	for index, item := range lst1 {
+		println("Hello, world! ", index, item)
+	}
+}
+
+func twoSum(nums []int, target int) []int {
+
+	for i, item := range nums {
+		if item >= target {
+			continue
+		}
+		compliment := target - item
+		for j, itemJ := range nums {
+			if itemJ == compliment && i != j {
+				return []int{i, j}
+			}
+		}
+	}
+	return []int{0, 0}
+
+}
+
+// 11 * 11 = 121
+// 10 * 11 / 2 = 55
+
+// 110 * 110 = 12100
+// 110 * 109 / 2 = 5995
+
+func twoSum1(nums []int, target int) []int {
+
+	// 7,11,15,45,22,10,2,8,10,12,14
+	// 3,00,00,00,00,00,8,2,00,00,00
+
+	for i, item := range nums {
+		if item >= target {
+			continue
+		}
+		compliment := target - item
+		for j := i; j < len(nums); j++ {
+			if nums[j] == compliment && i != j {
+				return []int{i, j}
+			}
+		}
+	}
+	return []int{0, 0}
+
+}
+
+// [7,11,15,45,22,10,2,8,10,12,14]
+// 10
+// [3,2,41,7,6,9,8,110,14,20,25,23]
+// 13
+// [3,3]
+// 6
+
+func twoSum2(nums []int, target int) []int {
+
+	// 7,11,15,45,22,10,2,8,10,12,14 // 121
+	// 3,00,00,00,00,00,8,2,00,00,00 // 55
+	keys := map[int]int{}
+	for i, item := range nums {
+
+		complement := target - item
+		if _, exist := keys[complement]; exist {
+			return []int{keys[complement], i}
+		}
+
+		keys[item] = i
+
+	}
+	return []int{0, 0}
+
+}