DS study : stack

This commit is contained in:
songyc macbook 2025-08-10 02:16:11 +09:00
parent 241f938c92
commit a1db4a6823
5 changed files with 417 additions and 0 deletions

View File

@ -0,0 +1,83 @@
#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#define MAX_SIZE 100
typedef struct Stack Stack;
struct Stack {
int data[MAX_SIZE];
int top;
void (*push)(Stack *s, int value);
int (*pop)(Stack *s);
bool (*isEmpty)(Stack *s);
};
void _push(Stack *s, int value){
if(s->top == MAX_SIZE-1){
printf("Stack is full!");
return;
}
s->data[++(s->top)] = value;
printf("stack : ");
for(int i=0; i<=s->top; i++){
printf("%d ",s->data[i]);
}
printf("\n");
}
int _pop(Stack *s){
if(s->top == -1){
printf("Stack is empty ");
return -1;
}
return s->data[(s->top)--];
}
bool _isEmpty(Stack *s){
return s->top == -1;
}
Stack creatStack(){
Stack s;
s.top = -1;
s.push = _push;
s.pop = _pop;
s.isEmpty = _isEmpty;
return s;
}
int main(){
Stack stack = creatStack();
while(true){
char input[10];
printf("\n명령을 입력하세요 (push, pop, isEmpty, exit): ");
scanf("%s", input);
if(!strcmp(input, "push")){
int value;
printf("스택에 넣을 값을 입력해주세요 : ");
scanf("%d", &value);
stack.push(&stack, value);
}
else if(!strcmp(input, "pop")){
int poppedValue = stack.pop(&stack);
if(poppedValue != -1){
printf("Pop value : %d\n", poppedValue);
}
}
else if(!strcmp(input, "isEmpty")){
printf("%s\n", stack.isEmpty(&stack) ? "스택이 비었습니다" : "스택이 비어있지 않습니다.");
}
else {
printf("종료합니다\n");
break;
}
}
return 0;
}

View File

@ -0,0 +1,94 @@
import java.util.*;
class Stack{
private int[] data;
private int top;
private int maxSize;
Stack(int maxSize){
data = new int[maxSize];
top = -1;
this.maxSize = maxSize;
}
void stackInfo(){
if(top == -1){
System.out.println("현재 스택 목록 : Empty!");
return;
}
System.out.printf("현재 스택 목록 : ");
for(int i=0; i<=top; i++) {
System.out.printf("%d ",this.data[i]);
}
System.out.printf("\ntop : %d\n",this.top);
}
void push(int value){
if(top == maxSize - 1){
System.out.println("스택이 꽉찼기 때문에 추가할 수 없습니다.");
return;
}
this.data[++(this.top)] = value;
}
void pop(){
if(this.top == -1){
System.out.println("스택이 비어있어서 처리할 수 없습니다.");
return;
}
System.out.printf("빠져나온 데이터 : %d\n",this.data[(this.top)--]);
}
int peek(){
return this.data[top];
}
}
public class DS_stack {
public static void main(String[] args) {
Scanner Order = new Scanner(System.in);
System.out.printf("스택의 최대길이를 입력해주세요. : ");
int maxSize = Integer.parseInt(Order.nextLine());
Stack stack = new Stack(maxSize);
boolean exit = false;
while(!exit){
System.out.println("======명령어 목록======");
System.out.println("1. push <value>");
System.out.println("2. pop");
System.out.println("3. peek");
System.out.println("4. info");
System.out.println("5. exit");
System.out.println("=====================");
System.out.printf("명령어를 입력하세요 : ");
String[] order = Order.nextLine().split(" ");
if (order[0] != null){
switch (order[0]){
case "push":
stack.push(Integer.parseInt(order[1]));
break;
case "pop":
stack.pop();
break;
case "peek":
System.out.printf("최상단 값 : %d\n",stack.peek());
break;
case "info":
stack.stackInfo();
break;
case "exit":
exit = true;
System.out.println("종료합니다!");
break;
default:
System.out.println("제대로 입력해주세요.");
break;
}
}
else{
System.out.println("명령어 목록을 잘 확인해서 다시 입력해주세요.");
}
}
Order.close();
}
}

View File

@ -0,0 +1,64 @@
import sys
input = sys.stdin.readline
class Stack:
def __init__(self, maxSize):
self.__size = maxSize
self.__data = [0]*maxSize
self.__top = -1
def stackInfo(self):
if self.__top == -1 :
print("Stack is Empty")
return
print("====현재 스택목록({}/{})====".format(self.__top+1,self.__size))
for i in range(self.__top+1):
print(self.__data[i], end = " ")
print()
def push(self, value):
if self.__top == self.__size - 1 :
print("스택이 꽉찼기 때문에 동작을 수행할 수 없습니다.")
return
self.__top += 1
self.__data[self.__top] = value
print("push 완료")
def pop(self):
if self.__top == -1 :
print("스택이 비어있어서 pop할 값이 없습니다")
return
print(self.__data[self.__top])
self.__top -= 1
def peek(self):
if self.__top == -1 :
print("스택이 비어있어서 최상단 값이 없습니다")
return
print(self.__data[self.__top])
print("스택의 최대사이즈를 입력해줘!")
stack = Stack(int(input()))
endPoint = False
while not endPoint :
print("명령어 목록")
print("push <value> | pop | info | peek | exit")
order = input().split()
match order[0]:
case "push":
stack.push(int(order[1]))
case "pop":
stack.pop()
case "info":
stack.stackInfo()
case "peek":
stack.peek()
case "exit":
print("종료")
endPoint = True
case _:
print("제대로 된 명령어를 입력해주세요.")

View File

@ -0,0 +1,99 @@
class Stack {
private var data: [Int]
private let maxSize: Int
private var top: Int
init(size: Int) {
self.maxSize = size
self.data = Array(repeating: 0, count: size)
self.top = -1
}
func isFull() -> Bool {
return self.top == self.maxSize - 1
}
func isEmpty() -> Bool {
return self.top == -1
}
func push(to value: Int) {
if isFull() {
print("스택 오버플로우! 더 이상 추가할 수 없습니다.")
return
}
self.top += 1
self.data[top] = value
}
func pop() -> Int? {
if isEmpty() {
return nil
}
let popValue = self.data[top]
self.top -= 1
return popValue
}
func peek() -> Int? {
if isEmpty() {
return nil
}
return self.data[top]
}
func info(){
if isEmpty() {
print("스택이 비어있습니다.")
return
}
print("스택목록 : ", terminator: "")
for i in 0...self.top {
print(self.data[i], terminator: " ")
}
print()
}
}
let stack: Stack = Stack(size: 10)
var exitFlag = true
while exitFlag {
print("명령어를 입력하세요 (push [값], pop, peek, info, exit):")
if let input = readLine(){
let components = input.split(separator: " ")
let order = String(components.first ?? "")
switch order {
case "push":
if components.count == 2, let value = Int(components[1]) {
stack.push(to: value)
print("\(value)를 push했습니다.")
} else {
print("push 명령어는 'push [숫자]' 형식으로 입력해야 합니다.")
}
case "pop":
if let popValue = stack.pop() {
print("Pop: \(popValue)")
} else {
print("스택이 비어있습니다.")
}
case "peek":
if let peekValue = stack.peek() {
print("Peek: \(peekValue)")
} else {
print("스택이 비어있습니다.")
}
case "info":
stack.info()
case "exit":
exitFlag = false
print("종료합니다")
default:
print("알 수 없는 명령어입니다.")
}
}
else{
print("제대로 입력해주세요")
}
}

View File

@ -0,0 +1,77 @@
class Stack{
private data: number[];
private top: number;
constructor(){
this.data = [];
this.top = -1;
}
public info(){
if(this.top == -1){
console.log("스택이 비어있습니다");
return;
}
let result: string = "Stack List(" + (this.top+1).toString() + " values) : "
for(let i=0; i<=this.top; i++){
result += this.data[i].toString() + " ";
}
console.log(result);
}
public push(value: number){
this.data[++(this.top)] = value;
console.log("push 성공!");
}
public pop(): number | undefined {
if(this.top === -1){
return undefined;
}
return this.data[(this.top)--];
}
public peek(): number | undefined {
if(this.top === -1){
return undefined;
}
return this.data[this.top];
}
}
let stack = new Stack();
let exitFlag = true;
while(exitFlag){
console.log("++++++++++++++++명령어모음++++++++++++++++");
console.log("push <value> | pop | peek | info | exit");
console.log("========================================");
console.log("명령어를 입력해주세요!");
const input:string[] = require("fs").readFileSync(0,"utf8").toString().trim().split(" ");
switch(input[0])
{
case "push":
stack.push(Number(input[1]));
break;
case "pop":
var popValue = stack.pop();
console.log(popValue===undefined ? "스택이 비었습니다." : "pop 완료 : " + popValue.toString());
break;
case "peek":
var peekValue = stack.peek();
console.log(peekValue===undefined ? "스택이 비었습니다." : "최상단 값 : " + peekValue.toString());
break;
case "info":
stack.info();
break;
case "exit":
exitFlag = false;
console.log("종료합니다.")
break;
default:
console.log("제대로 입력해주세요.")
break;
}
}