Example: Suppose your initial stack is S where you pushed 10 elements as below-
Top {9, 3, 4, 15, 20, 1, 6, 4, 9, 10} Bottom
X is taken as input and X= 6. Then pop out and remove the elements greater than or equal to X. Finally, the stack will look like-
Top {3, 4, 1, 4} Bottom
In c++ Please
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