How to count the number of repeated characters in a Golang String?

Count() is a built-in function is Golang that can be used to count the number of non-overlapping instances of a character/string in a string.

Syntax

func Count(s, sep string) int

Where,

• s – Original String

• sep – Substring which we want to count.

It returns an Integer value.

Example

The following example demonstrates how you can use the Count() function in a Go program.

package main import (    "fmt"    "strings" ) func main() {    // Initializing the Strings    x := "Golang Programming Language"    y := "Language"       // Display the Strings    fmt.Println("First String:", x)    fmt.Println("Second String:", y)        // Using Count Function    test1 := strings.Count(x, "g")    test2 := strings.Count(y, "b")        // Diplay the Count Output    fmt.Println("Count of 'g' in the First String:", test1)    fmt.Println("Count of 'b' in the Second String:", test2) }

Output

On execution, it will produce the following output −

First String: Golang Programming Language Second String: Language Count of 'g' in the First String: 5 Count of 'b' in the Second String: 0

Example

Let us take another example −

package main import (    "fmt"    "strings" ) func main() {    // Initializing the Strings    p := "Hyderabad"    q := "Country"    r := "Chennai"    s := "Pune"        // Display the Strings    fmt.Println("First String:", p)    fmt.Println("Second String:", q)    fmt.Println("Third String:", r)    fmt.Println("Fourth String:", s)        // Using the Count Function    w := strings.Count(p, "d")    x := strings.Count(q, "t")    y := strings.Count(r, "n")    z := strings.Count(s, "e")      // Display the Count Output    fmt.Println("Count of 'd' in First String:", w)    fmt.Println("Count of 't' in Second String:", x)    fmt.Println("Count of 'n' in Third String:", y)    fmt.Println("Count of 's' in Fourth String:", z) }

Output

It will produce the following output −

First String: Hyderabad Second String: Country Third String: Chennai Fourth String: Pune Count of 'd' in First String: 2 Count of 't' in Second String: 1 Count of 'n' in Third String: 2 Count of 's' in Fourth String: 1