Min Stack

minStack.go

type MinStack struct {
    stack [][]int
    top int
    
}

func Constructor() MinStack {
    stack := [][]int{}
    return MinStack{
        stack:stack,
        top:0,
    }
}

func (this *MinStack) Push(val int)  {
    if len(this.stack) == 0 {
        this.stack = append(this.stack, []int{val, val})
    } else if val <= this.GetMin() {
        this.stack = append(this.stack, []int{val, val})
      
    }else {
       this.stack = append(this.stack, []int{val, this.GetMin()})
    }
    this.top++
}


func (this *MinStack) Pop()  {
    this.stack = this.stack[:len(this.stack) - 1]
    this.top--
}


func (this *MinStack) Top() int {
    return this.stack[this.top-1][0]
}


func (this *MinStack) GetMin() int {
    return this.stack[this.top-1][1]
}


/**
 * Your MinStack object will be instantiated and called as such:
 * obj := Constructor();
 * obj.Push(val);
 * obj.Pop();
 * param_3 := obj.Top();
 * param_4 := obj.GetMin();
 */