If the elements “A”, “B”, “C” and “D” are placed in a stack and are deleted one at a time, in what order will they be removed?ABCDDCBA ABDCDCAB
Question
If the elements “A”, “B”, “C” and “D” are placed in a stack and are deleted one at a time, in what order will they be removed?ABCDDCBA ABDCDCAB
Solution 1
A stack in computer science is a data structure that follows the Last-In-First-Out (LIFO) principle. This means that the last element that was added to the stack will be the first one to be removed.
Given that the elements "A", "B", "C", and "D" are placed in a stack, they would be placed in this order:
Top -> D C B A Bottom
When we start removing the elements one at a time from the top of the stack, the order of removal will be "D", "C", "B", "A". This is because "D" was the last element placed on the stack, so it will be the first one to be removed, followed by "C", then "B", and finally "A".
Solution 2
The elements will be removed in the order "D", "C", "B", "A". This is because a stack follows the Last-In-First-Out (LIFO) principle. This means that the last element that was added to the stack ("D" in this case) will be the first one to be removed. After "D" is removed, "C" will be the next one to be removed, followed by "B" and finally "A".
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