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Write a Golang program to find the frequency of an element in an array
Examples
In the Input array, arr = [2, 4, 6, 7, 8, 1, 2]
Frequency of 2 in given array is 2
Frequency of 7 is 1
Frequency of 3 is 0.
Approach to solve this problem
Step 1: Define a function that accepts an array and a num
Step 2: Declare a variable count = 0.
Step 3: Iterate the given array and increase the count by 1 if num occurs in the array.
Step 4: Print count for the given num.
Program
package main
import "fmt"
func findFrequency(arr []int, num int){
count := 0
for _, item := range arr{
if item == num{
count++
}
}
fmt.Printf("Frequency of %d in given array is %d.\n", num, count)
}
func main(){
findFrequency([]int{2, 4, 5, 6, 3, 2, 1}, 2)
findFrequency([]int{0, 1, 3, 1, 6, 2, 1}, 1)
findFrequency([]int{1, 2, 3, 4, 5, 6, 7}, 10)
}Output
Frequency of 2 in given array is 2. Frequency of 1 in given array is 3. Frequency of 10 in given array is 0.
Updated on: 04-Feb-2021
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