Simple realization of stack for javascript.
For testing you need to install some dependencies:
npm installThen run tests:
npm testMethod for returning the size of the stack.
var stack = new Stack();
stack.push(6); // stack is now {0: 6}
stack.size(); // 1Method for pushing items into the stack.
var stack = new Stack();
stack.push(15); // stack is now {0: 15}Method for removing the last item from the stack.
var stack = new Stack();
stack.push(3); // stack is now {0: 3}
stack.push(8); // stack is now {0: 3, 1: 8}
stack.pop(); // return 8, stack is now {0: 3}
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