Welcome to collectivesolver - Programming & Software Q&A with code examples. A website with trusted programming answers. All programs are tested and work.

Contact: aviboots(AT)netvision.net.il

Instant Grammar Checker - Correct all grammar errors and enhance your writing

Semrush - keyword research tool

Prodentim Probiotics Specially Designed For The Health Of Your Teeth And Gums

Teach Your Child To Read

Disclosure: My content contains affiliate links.

31,649 questions

41,702 answers

573 users

How to find an element that appears once in an array of elements that appears three times in Go

1 Answer

0 votes
package main
 
import "fmt"
 
func findElementThatAppearsOnceInArray(arr []int) int {
    mp := make(map[int]int)
 
    for _, x := range arr {
        mp[x]++
    }
 
    for k, v := range mp {
        if v == 1 {
            return k
        }
    }
 
    return -1
}
 
func main() {
    arr:= []int{3, 5, 5, 2, 7, 3, 2, 8, 8, 3, 2, 5, 8}
 
    fmt.Println(findElementThatAppearsOnceInArray(arr))
}
 
 
 
/*
run:
 
7
 
*/

 



Learn & Practice Python
with the most comprehensive set of 13 hands-on online Python courses
Start now


answered Jul 8 by avibootz
...