To find the index of a string in a Go, you can “use the Strings.Index()” method. The Strings.Index() function returns the index of the first instance of a substring in a given string. If the substring is unavailable in the given string, it returns -1.
Syntax
func Index(str, substring string) intParameters
- str: It is an initially provided string
- substring – It is the string whose Index value we need to find
Example 1
package main
import (
"fmt"
"strings"
)
// Main function
func main() {
// Initializing the Strings
text := "Go is an open-source programming language created at Google."
// Display the Strings
fmt.Println("Given String:", text)
// Using the Index Function
result1 := strings.Index(text, "open-source")
result2 := strings.Index(text, "Python")
// Display the Index Output
fmt.Println("Index of 'open-source' in the Given String:", result1)
fmt.Println("Index of 'Python' in the Given String:", result2)
// Using the Count Function
count1 := strings.Count(text, "o")
count2 := strings.Count(text, "Go")
// Display the Count Output
fmt.Println("Number of 'o' occurrences in the Given String:", count1)
fmt.Println("Number of 'Go' occurrences in the Given String:", count2)
}
Output
Given String: Go is an open-source programming language created at Google.
Index of 'open-source' in the Given String: 9
Index of 'Python' in the Given String: -1
Number of 'o' occurrences in the Given String: 6
Number of 'Go' occurrences in the Given String: 2
Example 2
package main
import (
"fmt"
"strings"
)
func main() {
// Initializing the Strings
s1 := "Go is a powerful language"
s2 := "Golang is fun"
// Display the Strings
fmt.Println("First String:", s1)
fmt.Println("Second String:", s2)
// Using the Index Function
output1 := strings.Index(s1, "powerful")
output2 := strings.Index(s2, "fun")
// Display the Index Output
fmt.Println("Index of 'powerful' in the 1st String:", output1)
fmt.Println("Index of 'fun' in the 2nd String:", output2)
}
Output
First String: Go is a powerful language
Second String: Golang is fun
Index of 'powerful' in the 1st String: 8
Index of 'fun' in the 2nd String: 10
That’s it!
Krunal Lathiya is a seasoned Computer Science expert with over eight years in the tech industry. He boasts deep knowledge in Data Science and Machine Learning. Versed in Python, JavaScript, PHP, R, and Golang. Skilled in frameworks like Angular and React and platforms such as Node.js. His expertise spans both front-end and back-end development. His proficiency in the Python language stands as a testament to his versatility and commitment to the craft.
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