Golang : Reverse by word
This tutorial will show you how to reverse the order of words in a string. Reversing the words or elements order can be useful in queuing job or performing certain task that need LIFO(Last In First Out) order. In this simple example, the words order are reversed
package main
import (
"fmt"
"strings"
)
func reverse(s string) string {
words := strings.Fields(s) // tokenize each words from input string
totalLength := len(words)
// reverse the order(no sorting!)
for i, j := 0, totalLength-1; i < j; i, j = i+1, j-1 {
words[i], words[j] = words[j], words[i]
}
// return the reversed words
return strings.Join(words, " ")
}
func main() {
reversed := reverse("apple durian kiwi banana")
fmt.Println(reversed)
}
Output :
banana kiwi durian apple
NOTE :
Now, this is different from Sort.Reverse()
function, we are looking to reverse the order of the words, not sorting the order. If you are looking for sort and reverse, see here https://www.socketloop.com/tutorials/golang-sort-and-reverse-sort-a-slice-of-strings
Reference :
See also : Golang : Sort and reverse sort a slice of strings
By Adam Ng
IF you gain some knowledge or the information here solved your programming problem. Please consider donating to the less fortunate or some charities that you like. Apart from donation, planting trees, volunteering or reducing your carbon footprint will be great too.
Advertisement
Tutorials
+11.1k Golang : How to login and logout with JWT example
+3.8k Golang : Intercept, inject and replay HTTP traffics from web server
+29.3k Golang : Convert []string to []byte examples
+10k Golang : Sort and reverse sort a slice of bytes
+7.1k Golang : What is the default port number for connecting to MySQL/MariaDB database ?
+4k Golang : Join lines with certain suffix symbol example
+12.9k Golang : Iterate linked list example
+13.9k Golang : Display list of time zones with GMT
+4.2k Golang : Denco multiplexer example
+3.9k Java : Human readable password generator
+3.1k Chrome : How to block socketloop.com links in Google SERP?
+9.4k Golang : Concurrency and goroutine example