在Golang中比较字符串的不同方法

本文概述

在Go语言中, 字符串是不可变的任意字节链, 用UTF-8编码。你可以使用两种不同的方式来比较字符串：
1.使用比较运算符：Go字符串支持比较运算符, 即==, !=, > =, < =, < , > 。在这里==和!=运算符用于检查给定的字符串是否相等, 而> =, < =, < , > 运算符用于查找词法顺序。这些运算符的结果为布尔类型, 这意味着如果满足条件, 它将返回true, 否则返回false.
示例1：
Go

//Go program to illustrate the concept //of == and != operator with strings package main import "fmt" //Main function func main() { //Creating and initializing strings //using shorthand declaration str1 := "Geeks" str2 := "Geek" str3 := "srcmini" str4 := "Geeks" //Checking the string are equal //or not using == operator result1 := str1 == str2 result2 := str2 == str3 result3 := str3 == str4 result4 := str1 == str4fmt.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 != str4fmt.Println( "\nResult 5: " , result5) fmt.Println( "Result 6: " , result6) fmt.Println( "Result 7: " , result7) fmt.Println( "Result 8: " , result8) }

输出如下：

Result 1:false Result 2:false Result 3:false Result 4:trueResult 5:true Result 6:true Result 7:true Result 8:false

示例2：
Go

//Go program to illustrate the concept //of comparison operator with strings package main import "fmt" //Main function func 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) }

输出如下：

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.使用Compare()方法：你还可以使用字符串包提供的内置函数Compare()比较两个字符串。在字典上比较两个字符串之后, 此函数返回一个整数值。返回值为：

如果返回0str1 == str2.
返回1, 如果str1> str2.
如果为-1, 则返回-1str1 < str2.

语法如下：

func Compare(str1, str2 string) int

例子：
Go

//Go program to illustrate how to compare //string using compare() function package main import ( "fmt" "strings" ) func main() { //Comparing string using Compare function fmt.Println(strings.Compare( "gfg" , "Geeks" ))fmt.Println(strings.Compare( "srcmini" , "srcmini" ))fmt.Println(strings.Compare( "Geeks" , " GFG" ))fmt.Println(strings.Compare( "GeeKS" , "GeeKs" )) }

【在Golang中比较字符串的不同方法】输出如下：