func caesarCipher(s string, k int32) string {
// Write your code here
k=k%26
a:=make([]int32,len(s))
for i:=0;i<len(s);i++{
if (s[i]>=97&&s[i]<=122){
a[i]=((int32(s[i])+k))
if a[i]>122{
a[i]=(a[i]-123)+97
}
}else if(s[i]>=65&&s[i]<=90){
a[i]=((int32(s[i])+k))
if a[i]>90{
a[i]=(a[i]-91)+65
}
}else{
a[i]=int32(s[i])
}
}
fmt.Println(string(a))
return string(a)
}