![]() In this case I would consider following advice. With regard to sharing a single array as the underlying store, performance is the only likely reason that would make sense. However, the type would no longer meet the commonly understood definition of a stack which generally does not have an upper bound. If you desire a more performance oriented implementation, with upper bounded stack sizes you could allow a different size to be specified for each by taking 3 constructor arguments. Simple method Efficient method Prerequisite: Stack, Array Let us get started with Implement K stacks in one array. ![]() When a stack gets another element added, it has to use the first free element and set the free pointer to the next free. Three more pointers return the last element of each stack (or. are: 3 The main exception is KLEE, where the execution stack is completely. I would argue that the alternative presented is closer to the notion of a type that is composed of three stacks and that composition is inherent in the name of the type. You can implement three stacks with a linked list: You need a pointer pointing to the next free element. In principle, a single flat array of memory is sufficient to implement all. Additionally, one does not expect a Stack to have an upper bound beyond what is dictated by the VM. The problem with this approach is I will. if stack S1 is full when a new element is trying to be pushed in, then push that element into stack S2 and vice versa). For the PUSH-S1 and PUSH-S2 operations, if the stack is 'full' then start pushing elements into the other stack (eg. It could have meant maximum size of all three stacks combined, as was the case, but this was not obvious from the public interface exposed by the class. Let array A 1.n implement two stacks: S1 1.i and S2 i.n. ![]() This does seems to work for N stacks in a single array - tasnimrock2k6 Septem Flag Reply. The most common stack implementation is using arrays, but it can also be implemented using lists. then you can use another int array, and implement a linklist, and solve to problem with highest efficiency. I have removed the size argument because it was not clear what it represented in the original code. Stack Implementations in Python, Java, C, and C++. This way we can have 3 stack but prob would be once 2nd array got any element than the 1st and 2nd array will have calculated space only. Any advice on object oriented design, coding structure, logical part or any sort of advice would be appreciated. I have implemented three stacks in a single array in Java.
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