//@H_403_2@字符串和字符@H_403_2@

//1.@H_403_2@定义@H_403_2@

let@H_403_2@ str2 = "hellow"@H_403_2@

let@H_403_2@ str3 = "hellow world"@H_403_2@

let@H_403_2@ str4 = "w"@H_403_2@

let@H_403_2@ str5 = "y"@H_403_2@//@H_403_2@单个字符，多个或没有会报错@H_403_2@

@H_403_2@

//2.@H_403_2@字符串比较@H_403_2@==@H_403_2@

if@H_403_2@ str2@H_403_2@ == str3@H_403_2@{

println@H_403_2@("@H_403_2@\(str2@H_403_2@)与@H_403_2@\(str3@H_403_2@)是相等的@H_403_2@"@H_403_2@)

}else@H_403_2@{

println@H_403_2@("@H_403_2@\(str2@H_403_2@)与@H_403_2@\(str3@H_403_2@)是不相等的@H_403_2@"@H_403_2@)

}

//3.@H_403_2@判断后缀是否相等@H_403_2@

if@H_403_2@ str2@H_403_2@.hasSuffix@H_403_2@(str4@H_403_2@){

println@H_403_2@("@H_403_2@\(str2@H_403_2@)的后缀是@H_403_2@\(str4@H_403_2@)"@H_403_2@)

}

//4.@H_403_2@判断前缀是否相等@H_403_2@

if@H_403_2@ str3@H_403_2@.hasPrefix@H_403_2@(str2@H_403_2@){

println@H_403_2@("@H_403_2@\(str3@H_403_2@)的前缀是@H_403_2@\(str2@H_403_2@)"@H_403_2@)

}