[Data Structure] Stack Implementation in Python

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[Data Structure] Stack Implementation in Python

We can realize a Stack as an adaptation of a Python List. S.push(e)=L.append(e) S.pop()=L.pop() S.top()=L[-1] S.len()=len(L) S.is_empty=(len(L)==0) class Empty(Exception): pass class ArrayStack: """LIFO Stack implementation using Python&quo…

uva 11995 I Can Guess the Data Structure stack,queue,priority_queue

题意:给你n个操做,判断是那种数据结构. #include<iostream> #include<cstdio> #include<cstdlib> #include<stack> #include<queue> using namespace std; int n; ],u[]; int ck_q() { //cout<<"!!"<<endl; queue<int>s; ; i<n;…

Data Structure Stack: Reverse a stack using recursion

http://www.geeksforgeeks.org/reverse-a-stack-using-recursion/ #include <iostream> #include <vector> #include <algorithm> #include <queue> #include <stack> #include <string> #include <fstream> #include <map>…

Data Structure Stack: Infix to Postfix

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Python: tree data structure

# 树结构 from pythonds.basic.stack import Stack #pip install pythonds from pythonds.trees.binaryTree import BinaryTree from collections import defaultdict import json #JSON-esque def tree(): return defaultdict(tree) def dicts(t): return {k: dicts(t[k])…

笔记-python-tutorial-5.data structure

笔记-python-tutorial-5.data structure 1. data structure 1.1. list operation list.append(x) #尾部添加一个元素 list.extend(iterable) list.insert(I, x) list.remove(x) remove the first item from the list whose value is x.if x is not exist return ValueError…

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题目 Source http://acm.hdu.edu.cn/showproblem.php?pid=5739 Description Professor Zhang has an undirected graph G with n vertices and m edges. Each vertex is attached with a weight wi. Let Gi be the graph after deleting the i-th vertex from graph G. Pro…