// Calling Peek() method on empty stack // will throw InvalidOperationException. Console.WriteLine("Element at the top is : "+myStack.Peek()); } } 运行时错误: 未处理的异常:System.InvalidOperationException:堆栈为空。 参考:
method and the// constructor that accepts an IEnumerable<T>.Stack<string> stack2 =newStack<string>(numbers.ToArray()); Console.WriteLine("\nContents of the first copy:");foreach(stringnumberinstack2 ) { Console.WriteLine(number); }// Create an array twice the size of the stack and ...
This method is similar to the Pop method, but Peek does not modify the Stack. null can be pushed onto the Stack as a placeholder, if needed. To distinguish between a null value and the end of the stack, check the Count property or catch the InvalidOperationException, which is thrown whe...
Stack Methods TwitterLinkedInFacebookEmail Reference Feedback Definition Namespace: Java.Util Assembly: Mono.Android.dll Looks at the object at the top of this stack without removing it from the stack. C# [Android.Runtime.Register("peek","()Ljava/lang/Object;","GetPeekHandler")]publicvirtualJa...
method and the// constructor that accepts an IEnumerable<T>.Stack<string> stack2 =newStack<string>(numbers.ToArray()); Console.WriteLine("\nContents of the first copy:");foreach(stringnumberinstack2 ) { Console.WriteLine(number); }// Create an array twice the size of the stack and ...
Total number of elements in the Stack are : 6 示例2: // C# code to illustrate the// Stack.PeekMethodusingSystem;usingSystem.Collections;classGFG{// Driver codepublicstaticvoidMain(){// Creating a StackStack myStack =newStack();// Displaying the top element of Stack// without removing it...
Stack peek() Method in Java Java 中的 java.util.Stack.peek() 方法用于检索或获取 Stack 的第一个元素或存在于 Stack 顶部的元素。检索到的元素不会从堆栈中删除或移除。 语法: STACK.peek() Parameters:该方法不带任何参数。 返回值:该方法返回堆栈顶部的元素,否则如果堆栈为空,则返回NULL。
原文:https://www.geeksforgeeks.org/stack-peek-method-in-c-sharp/ 该方法(属于系统。集合命名空间)用于返回堆栈顶部的对象,而不移除它。此方法类似于 Pop 方法,但 Peek 不会修改 Stack。语法:public virtual object Peek (); 返回值:返回栈顶的对象。异常:在空栈上调用 Peek()方法会抛出invalid operation...
C# Stack Peek Method - Learn how to use the Stack Peek method in C#. This tutorial explains its syntax, usage, and examples to help you understand how to access the top element of a stack without removing it.
stackvariable.Peek( ) Return Value Object Description Returns the first item in the stack as an Object, but does not remove it from the stack Programming Tips and Gotchas The Peek method is similar to the Stack object’s Pop method, except that it leaves the stack intact. ...