golangHow to generate random string

This solution is based on Paul Hankins' code.

package main
import ( "time"; "math/rand" )

var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")

func rand_str(n int) string {
  b := make([]rune, n)
  for i := range b {
    b[i] = letters[rand.Intn(len(letters))]
  }
  return string(b)
}

func main() {
  rand.Seed(time.Now().UnixNano())
  res := rand_str(30)
}ctrl + cgithub

`package main` default package declaration	`"math/rand"` lib for random numbers generation
`rand.Seed(` init random generator with new seed	`rand_str(` custom function that returns random string of a given length
`make([]rune, n)` makes a map of a `n` elements	`for i := range b {` iterate all `b` (map) elements
`letters[rand.Intn(len(letters))]` populate each `b` element with random elements from `letters` array

Usage example

package main
import ( "time"; "math/rand" )

var letters = []rune("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ")

func rand_str(n int) string {
  b := make([]rune, n)
  for i := range b {
    b[i] = letters[rand.Intn(len(letters))]
  }
  return string(b)
}

func main() {
  rand.Seed(time.Now().UnixNano())
  res := rand_str(30)
  print(res)
}

output

iiSohqBecttbFDXygjOKhvzFxPabFd

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golangHow to generate random string

Usage example

output

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