how to reverse array golang

//  string teritory
stringArray := strings.Split("you must be pray before learn anything", " ")
fmt.Println("before sort", stringArray)

fmt.Printf("data not sorted %v \n", sort.StringsAreSorted(stringArray))

sort.Sort(sort.Reverse(sort.StringSlice(stringArray)))
fmt.Println("after sort", stringArray)

fmt.Printf("data sorted %v \n", sort.StringsAreSorted(stringArray))

//  int teritory
intArray := []int{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
fmt.Println("before sort", intArray)

fmt.Printf("data not sorted %v \n", sort.IntsAreSorted(intArray))

sort.Sort(sort.Reverse(sort.IntSlice(intArray)))
fmt.Println("after sort", intArray)

fmt.Printf("data sorted %v \n", sort.IntsAreSorted(intArray))

Posted by: Guest on October-04-2021

package main import "fmt" func reverseArray(arr []int) []int{ for i, j := 0, len(arr)-1; i<j; i, j = i+1, j-1 { arr[i], arr[j] = arr[j], arr[i] } return arr } func main(){ fmt.Println(reverseArray([]int{1, 2, 3, 4, 5})) fmt.Println(reverseArray([]int{3, 5, 7, 2, 1})) fmt.Println(reverseArray([]int{9, 8, 6, 1, 0})) }

package main import "fmt" func main() { cities := [...]string{"New York", "Beijing", "Bangkok", "Adelaide", "Tokyo", "Seoul", "Zurich", "Seattle"} fmt.Println("Before : ", cities) reversed := []string{} // reverse order // and append into new slice for i := range cities { n := cities[len(cities)-1-i] //fmt.Println(n) -- sanity check reversed = append(reversed, n) } fmt.Println("After : ", reversed) }

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