Execute a program to implement a linked stack to check for the balancing of the following pairs of symbols in a Pascal program. The name of the source Pascal program is the sole input to the program. Symbols: begin end, ( ), [ ], { }. (i) Output errors encountered during mismatch of symbols. (ii) Modify the program to set right the errors.

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Heap Sort

A Heap is a type of data structure that is built on trees. It's a binary tree that's virtually complete. Except for the very bottom level, all levels of the tree must be filled in a heap. The last (bottom) level should be filled from left to right. The heap data structure is used for the efficient implementation of priority queues.Heap can be of two types: