Go语言学习9-矩阵Array

// Arrays
package main

import (
    "fmt"
)

func main() {
    //Here we create an array a that will hold exactly 5 ints. The type of elements and length are both part of the array’s type. By default an array is zero-valued, which for ints means 0s.
    var a [5]int
    fmt.Println("emp:", a)
    //We can set a value at an index using the array[index] = value syntax, and get a value with array[index].
    a[4] = 100
    fmt.Println("set:", a)
    fmt.Println("get:", a[4])
    //The builtin len returns the length of an array.
    fmt.Println("len:", len(a))
    //Use this syntax to declare and initialize an array in one line.
    b := [5]int{1, 2, 3, 4, 5}
    fmt.Println("dcl:", b)
    //Array types are one-dimensional, but you can compose types to build multi-dimensional data structures.
    var twoD [2][3]int
    for i := 0; i < 2; i++ {
        for j := 0; j < 3; j++ {
            twoD[i][j] = i + j
        }
    }
    fmt.Println("2d: ", twoD)
}

转自

// Arrays
package main

import (
    "fmt"
)

func main() {
    //Here we create an array a that will hold exactly 5 ints. The type of elements and length are both part of the array’s type. By default an array is zero-valued, which for ints means 0s.
    var a [5]int
    fmt.Println("emp:", a)
    //We can set a value at an index using the array[index] = value syntax, and get a value with array[index].
    a[4] = 100
    fmt.Println("set:", a)
    fmt.Println("get:", a[4])
    //The builtin len returns the length of an array.
    fmt.Println("len:", len(a))
    //Use this syntax to declare and initialize an array in one line.
    b := [5]int{1, 2, 3, 4, 5}
    fmt.Println("dcl:", b)
    //Array types are one-dimensional, but you can compose types to build multi-dimensional data structures.
    var twoD [2][3]int
    for i := 0; i < 2; i++ {
        for j := 0; j < 3; j++ {
            twoD[i][j] = i + j
        }
    }
    fmt.Println("2d: ", twoD)
}