How to find the Characters in the First String that are not Present in the Second String in Go - Step by Step Examples

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How to find the Characters in the First String that are not Present in the Second String in Go ?

Answer

To find the characters in the first string that are not present in the second string in Go, you can use loops and maps.

✐ Examples

1 Find Characters Not Present in Second String

In this example,

We create two string variables named str1 and str2 with different values.
We convert both strings to arrays of bytes.
We create a map to store the frequency of characters in str2.
We iterate through the characters of str1 and check if they are present in the map. If not, we append them to the result string.
Finally, we print the characters not present in the second string.

Go Program

// Find Characters Not Present in Second String
package main
import (
    "fmt"
)
func main() {
    str1 := "Hello World"
    str2 := "apple"
    bytes1 := []byte(str1)
    bytes2 := []byte(str2)
    freqMap := make(map[byte]int)
    for _, char := range bytes2 {
        freqMap[char]++
    }
    var result []byte
    for _, char := range bytes1 {
        if freqMap[char] == 0 {
            result = append(result, char)
        }
    }
    fmt.Printf("Characters not present in second string: %s\n", result)
}

Output

Characters not present in second string: Ho Word

Summary

In this tutorial, we learned How to find the Characters in the First String that are not Present in the Second String in Go language with well detailed examples.

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