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Commit 9afbe2b

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author
Rajeev Kumar Singh
committed
Array Examples
1 parent 7108014 commit 9afbe2b

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7 files changed

+132
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lines changed

7 files changed

+132
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‎tutorial6-arrays/array.go

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package main
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import "fmt"
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func main() {
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var x [5]int // An array of 5 integers
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fmt.Println(x)
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var y [8]string // An array of 8 strings
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fmt.Println(y)
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var z [3]complex128 // An array of 3 complex numbers
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fmt.Println(z)
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// By default, all the array elements are assigned the zero value of the array type.
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// For example, if we declare an integer array, all the elements will be initialized with zero.
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// If we declare a string array, all the elements will be initialized with an empty string, and so on.
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}

‎tutorial6-arrays/array_indexing.go

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package main
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import "fmt"
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func main() {
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var x [5]int // An array of 5 integers
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x[0] = 100
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x[1] = 101
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x[3] = 103
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x[4] = 105
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fmt.Printf("x[0] = %d, x[1] = %d, x[2] = %d\n", x[0], x[1], x[2])
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fmt.Println("x = ", x)
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}
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package main
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import "fmt"
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func main() {
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// Declaring and initializing an array at the same time
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var a = [5]int{2, 4, 6, 8, 10}
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fmt.Println(a)
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// Short hand declaration for declaring and initializing an array
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b := [5]int{2, 4, 6, 8, 10}
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fmt.Println(b)
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// You don't need to initialize all the elements of the array.
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// The un-initialized elements will be assigned the zero value of the corresponding array type
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c := [5]int{2}
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fmt.Println(c)
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// Letting Go compiler infer the length of the array
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d := [...]int{3, 5, 7, 9, 11, 13, 17}
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fmt.Println(d)
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}

‎tutorial6-arrays/array_iteration.go

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package main
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import "fmt"
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func main() {
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// Iterating over and Array and printing its elements
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names := [3]string{"Mark Zuckerberg", "Bill Gates", "Larrt Page"}
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for i := 0; i < len(names); i++ {
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fmt.Println(names[i])
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}
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// Finding the Sum of an Array
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a := [4]float64{3.5, 7.2, 4.8, 9.5}
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sum := float64(0)
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for i := 0; i < len(a); i++ {
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sum = sum + a[i]
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}
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fmt.Printf("Sum of all the elements in array %v = %f\n", a, sum)
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}
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package main
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import "fmt"
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func main() {
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// Iterating over an array using range form of for loop
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daysOfWeek := [7]string{"Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"}
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for index, value := range daysOfWeek {
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fmt.Printf("Day %d of week = %s\n", index, value)
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}
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// Finding the sum of an array
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a := [4]float64{3.5, 7.2, 4.8, 9.5}
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sum := float64(0)
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for _, value := range a {
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sum = sum + value
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}
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fmt.Printf("Sum of all the elements in array %v = %f\n", a, sum)
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}

‎tutorial6-arrays/array_value_types.go

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package main
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import "fmt"
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func main() {
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a1 := [5]string{"English", "Japanese", "Spanish", "French", "Hindi"}
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a2 := a1 // A copy of the array `a1` is assigned to `a2`
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a2[1] = "German"
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fmt.Println("a1 = ", a1) // The array `a1` remains unchanged
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fmt.Println("a2 = ", a2)
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}
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package main
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import "fmt"
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func main() {
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a := [2][2]int{
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{3, 5},
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{7, 9}, // This comma is necessary
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}
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fmt.Println(a)
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// Just like 1D arrays, you don't need to initialize all the elements in a multi-dimensional array.
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// Un-initialized array elements will be assigned the zero value of the array type
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b := [3][4]float64{
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{1, 3},
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{4.5, -3, 7.4, 2},
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{6, 2, 11},
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}
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fmt.Println(b)
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}

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