Category: Stack

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Valid Multiple Parentheses

Objective: Given a string containing just the characters ‘(‘, ‘)’, ‘{‘, ‘}’, ‘[‘ and ‘]’, determine if the input string is valid. Example: ()()([]({}))[] valid: true ()({]) valid: false []{}() valid: true [(}{)] valid: false Earlier we had seen problem Valid...

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Implement Stack Using Linked List

Objective: Write an algorithm to implement Stack using Linked List. If you do not know about then for starters its abstract data type in which follows the principle of LIFO (Last-In-First-Out) which means the...

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