# Write a Golang program to find the frequency of each element in an array

## Examples

Input Array = [1, 3, 4, 3, 2, 3, 4, 0, 2]

 Element 1 3 4 2 0 Frequency 1 3 2 2 1

## Approach to solve this problem

• Step 1: Define a method that accepts an array.
• Step 2: Define a map, where key would be the array’s elements and the starting value is 0.
• Step 3: Start iterating the input array. If an element is present in the map, then increment the count.
• Step 4: If the element is not present in the map, then store in map and make its value 1.

## Program

Live Demo

package main
import (
"fmt"
)

func findFrequencyOfArray(arr []int){
frequency := make(map[int]int)
for _, item := range arr{
if frequency[item] == 0{
frequency[item] = 1
} else {
frequency[item]++
}
}
for item, count := range frequency{
fmt.Printf("%d occurring %d times.\n", item, count)
}
}

func main(){
findFrequencyOfArray([]int{2, 2, 5, 1, 3, 5, 0})
}

## Output

2 occurring 2 times.
5 occurring 2 times.
1 occurring 1 times.
3 occurring 1 times.
0 occurring 1 times.