Files
the-way-to-go_ZH_CN/eBook/exercises/chapter_12/stack/stack_struct.go
2015-03-03 12:25:25 -05:00

33 lines
544 B
Go
Executable File

// stack_struct.go
package stack
import "strconv"
const LIMIT = 10
type Stack struct {
ix int // first free position, so data[ix] == 0
data [LIMIT]int
}
func (st *Stack) Push(n int) {
if (st.ix + 1 > LIMIT) {
return // stack is full!
}
st.data[st.ix] = n
st.ix++
}
func (st *Stack) Pop() int {
st.ix--
return st.data[st.ix]
}
func (st Stack) String() string {
str := ""
for ix:=0; ix<st.ix; ix++ {
str += "[" + strconv.Itoa(ix) + ":" + strconv.Itoa(st.data[ix]) + "] "
}
return str
}