In Go language, the string is an immutable chain of arbitrary bytes encoded with UTF-8 encoding. You are allowed to compare strings with each other using two different ways:
1. Using comparison operators: Go strings support comparison operators, i.e, ==, !=, >=, <=, <, >. Here, the == and != operator are used to check if the given strings are equal or not, and >=, <=, <, > operators are used to find the lexical order. The results of these operators are of Boolean type, meaning if the condition is satisfied it will return true, otherwise, return false.
Example 1:
Go
// Go program to illustrate the concept// of == and != operator with stringspackage mainimport "fmt"// Main functionfunc main() { // Creating and initializing strings // using shorthand declaration str1 := "Geeks" str2 := "Geek" str3 := "GeeksforGeeks" str4 := "Geeks" // Checking the string are equal // or not using == operator result1 := str1 == str2 result2 := str2 == str3 result3 := str3 == str4 result4 := str1 == str4 fmt.Println("Result 1: ", result1) fmt.Println("Result 2: ", result2) fmt.Println("Result 3: ", result3) fmt.Println("Result 4: ", result4) // Checking the string are not equal // using != operator result5 := str1 != str2 result6 := str2 != str3 result7 := str3 != str4 result8 := str1 != str4 fmt.Println("\nResult 5: ", result5) fmt.Println("Result 6: ", result6) fmt.Println("Result 7: ", result7) fmt.Println("Result 8: ", result8)} |
Output:
Result 1: false Result 2: false Result 3: false Result 4: true Result 5: true Result 6: true Result 7: true Result 8: false
Example 2:
Go
// Go program to illustrate the concept// of comparison operator with stringspackage mainimport "fmt"// Main functionfunc main() { // Creating and initializing // slice of string using the // shorthand declaration myslice := []string{"Geeks", "Geeks", "gfg", "GFG", "for"} fmt.Println("Slice: ", myslice) // Using comparison operator result1 := "GFG" > "Geeks" fmt.Println("Result 1: ", result1) result2 := "GFG" < "Geeks" fmt.Println("Result 2: ", result2) result3 := "Geeks" >= "for" fmt.Println("Result 3: ", result3) result4 := "Geeks" <= "for" fmt.Println("Result 4: ", result4) result5 := "Geeks" == "Geeks" fmt.Println("Result 5: ", result5) result6 := "Geeks" != "for" fmt.Println("Result 6: ", result6)} |
Output:
Slice: [Geeks Geeks gfg GFG for] Result 1: false Result 2: true Result 3: false Result 4: true Result 5: true Result 6: true
2. Using Compare() method: You can also compare two strings using the built-in function Compare() provided by the strings package. This function returns an integer value after comparing two strings lexicographically. The return values are:
- Return 0, if str1 == str2.
- Return 1, if str1 > str2.
- Return -1, if str1 < str2.
Syntax:
func Compare(str1, str2 string) int
Example:
Go
// Go program to illustrate how to compare// string using compare() functionpackage mainimport ( "fmt" "strings")func main() { // Comparing string using Compare function fmt.Println(strings.Compare("gfg", "Geeks")) fmt.Println(strings.Compare("GeeksforGeeks", "GeeksforGeeks")) fmt.Println(strings.Compare("Geeks", " GFG")) fmt.Println(strings.Compare("GeeKS", "GeeKs"))} |
Output:
1 0 1 -1
