Mathematics · Data Structures

तत्वों [5, 10, 15, 20] (जहाँ 5 फ्रंट पर है और 20 रियर पर है) वाले एक डेक (deque) में, यदि सामने (front) से तत्व '25' डाला जाता है और फिर पीछे (rear) से एक तत्व हटाया जाता है, तो डेक का नया पिछला (rear) तत्व कौन सा होगा?

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