11/9 <Stack> 155 232 225

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11/9 <Stack> 155 232 225

155. Min Stack class MinStack { int min = Integer.MAX_VALUE; Stack<Integer> stack = new Stack<Integer>(); /** initialize your data structure here. */ public MinStack() { } public void push(int x) { if(x <= min){ stack.push(min); min = x; }…

【LeetCode】232 & 225 - Implement Queue using Stacks & Implement Stack using Queues

232 - Implement Queue using Stacks Implement the following operations of a queue using stacks. push(x) -- Push element x to the back of queue. pop() -- Removes the element from in front of queue. peek() -- Get the front element. empty() -- Return whe…

D3_book 11.2 stack

<!DOCTYPE html> <meta charset="utf-8"> <style> </style> <body> <script src="../d3.min.js"></script> <scrip…

tensorflow 基本函数(1.tf.split, 2.tf.concat,3.tf.squeeze, 4.tf.less_equal, 5.tf.where, 6.tf.gather, 7.tf.cast, 8.tf.expand_dims, 9.tf.argmax, 10.tf.reshape， 11.tf.stack， 12tf.less， 13.tf.boolean_mask

1. tf.split(3, group, input) # 拆分函数 3 表示的是在第三个维度上, group表示拆分的次数, input 表示输入的值 import tensorflow as tf import numpy as np x = [[1, 2], [3, 4]] Y = tf.split(axis=1, num_or_size_splits=2, value=x) sess = tf.Session() for y in Y: print(sess.run(y))…

leetcode 155. Min Stack 、232. Implement Queue using Stacks 、225. Implement Stack using Queues

155. Min Stack class MinStack { public: /** initialize your data structure here. */ MinStack() { } void push(int x) { if(s1.empty() && s2.empty()){ s1.push(x); s2.push(x); } else{ if(x < s2.top()){ s1.push(x); s2.push(x); } else{ s1.push(x); s2…

第11天 Stack Queue

1.Stack package algs4; import java.util.Iterator; import java.util.NoSuchElementException; public class Stack<Item> implements Iterable<Item> { private Node<Item> first; private int n; private static class Node<Item> { private Item…

数据结构11: 栈(Stack)的概念和应用及C语言实现

栈,线性表的一种特殊的存储结构.与学习过的线性表的不同之处在于栈只能从表的固定一端对数据进行插入和删除操作,另一端是封死的. 图1 栈结构示意图由于栈只有一边开口存取数据,称开口的那一端为“栈顶”,封死的那一端为“栈底”(类似于盛水的木桶,从哪进去的最后还得从哪出来). 栈的“先进后出”原则使用栈存储数据元素,对数据元素的“存”和“取”有严格的规定:数据按一定的顺序存储到栈中,当需要调取栈中某数据元素时,需要将在该数据元素之后进栈的先出栈,该数据元素才能从栈中提取出来. 如图 1 ,栈中存放…

232. Implement Queue using Stacks,225. Implement Stack using Queues

232. Implement Queue using Stacks Total Accepted: 27024 Total Submissions: 79793 Difficulty: Easy Implement the following operations of a queue using stacks. push(x) -- Push element x to the back of queue. pop() -- Removes the element from in front o…

11月26号host

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11月16host文件

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