You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
62 lines
1.0 KiB
Go
62 lines
1.0 KiB
Go
package stack
|
|
|
|
type Stack struct {
|
|
st []interface{}
|
|
len int
|
|
}
|
|
|
|
func New() *Stack {
|
|
stack := &Stack{}
|
|
stack.st = make([]interface{}, 1)
|
|
stack.len = 0
|
|
return stack
|
|
}
|
|
|
|
func (stack *Stack) Length() int {
|
|
return stack.len
|
|
}
|
|
|
|
func (stack *Stack) Pop() {
|
|
stack.st = stack.st[1:]
|
|
stack.len -= 1
|
|
}
|
|
|
|
func (stack *Stack) Peek() interface{} {
|
|
return stack.st[0]
|
|
}
|
|
|
|
func (stack *Stack) IsEmpty() bool {
|
|
return (stack.len == 0)
|
|
}
|
|
|
|
func (stack *Stack) Push(value interface{}) {
|
|
stack.len += 1
|
|
add(stack, value)
|
|
}
|
|
|
|
func add(slice *Stack, value interface{}) {
|
|
var tmpSlice []interface{} = make([]interface{}, slice.len)
|
|
if slice.len == 0 {
|
|
slice.st[0] = value
|
|
return
|
|
}
|
|
|
|
for i:=0; i < slice.len; i++ {
|
|
tmpSlice[i] = 0
|
|
}
|
|
|
|
for i:=0; i < slice.len; i++ {
|
|
if i == 0 {
|
|
tmpSlice[0] = value
|
|
} else {
|
|
tmpSlice[i] = slice.st[i - 1]
|
|
}
|
|
|
|
if i == slice.len - 1 {
|
|
break
|
|
}
|
|
}
|
|
|
|
slice.st = tmpSlice
|
|
}
|