Data Structure

Array

For array code comments

arr := []int{1,2}

arr := []string{""}

resArr := make([]int,len(arr))

Map

For maps code comments

MapName
Key : Value
1   : 2
1   : 2
1   : 2
1   : 2

Map declaration

hashMap := make(map[int]int)

Stacks

Illustrate

/*
stacks
| |
| |
| |
|_|

Front - Last (LIFO)

*/

Stack-Int

type Stack struct {
    stack []int
}

func (this *Stack) init() {
    this.stack = []int{}
}

func (this *Stack) Peek() int {
    return this.stack[len(this.stack)-1]
}

func (this *Stack) Pop() {
    if len(this.stack) > 0 {
        this.stack = this.stack[:len(this.stack)-1]
    }
}

func (this *Stack) Top() int {
    top := this.stack[len(this.stack)-1]
    this.stack = this.stack[:len(this.stack)-1]
    return top
}

func (this *Stack) Empty() bool {
    return len(this.stack) == 0
}

func (this *Stack) Push(a int) {
    this.stack = append(this.stack, a)
}

func (this *Stack) Len() int {
    return len(this.stack) 
}

Stack-String

String stack

type Stack struct {
    stack []string
}

func (this *Stack) init() {
    this.stack = []string{}
}

func (this *Stack) Peek() string {
    return this.stack[len(this.stack)-1]
}

func (this *Stack) Pop() {
    if len(this.stack) > 0 {
        this.stack = this.stack[:len(this.stack)-1]
    }
}

func (this *Stack) Top() string {
    top := this.stack[len(this.stack)-1]
    this.stack = this.stack[:len(this.stack)-1]
    return top
}

func (this *Stack) Empty() bool {
    return len(this.stack) == 0
}

func (this *Stack) Push(a string) {
    this.stack = append(this.stack, a)
}

func (this *Stack) Len() int {
    return len(this.stack) 
}