LC: Reverse String

Link to problem

Solution 1

func reverseString(s []byte)  {    
    // lets play with a stooopid solution first
    rev := make([]byte,len(s))
    for i:=0;i<len(s);i++{            
        rev[i]=s[len(s)-i-1]
    }
    for i:=0;i<len(s);i++{
        s[i]=rev[i]
    }

}

Solution 2

func reverseString(s []byte)  {    
    var tmp byte
    l := len(s)
    
    for i:=0;i<l/2;i++{
        if s[i] == s[l-i-1]{
            continue
        }
        tmp = s[i]
        s[i]=s[l-i-1]
        s[l-i-1]=tmp        
    }
}

Solution 3

func reverseString(s []byte)  {    
    var L,o,l int
    L=len(s)
    for o=L-1;l<L/2;l,o=l+1,o-1{
        if s[l]==s[o]{
            continue
        }
        s[l],s[o]=s[o],s[l]        
    }
}

The stats are buggy… I just put them to make the post look pretty, some images…

Some refactoring

func reverseString(s []byte)  {         
    for o,k:=len(s)-1,0;o>k;o,k=o-1,k+1{
        if s[o]==s[k]{
            continue
        }
        s[k],s[o]=s[o],s[k]        
    }
}

Got anymore ? lmk