The graphic in the description should be updated. The description says “Consider the input array below.” but graphic does not show the array. Instead it shows two portions of the array and how those portions are merged.
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Course: https://www.educative.io/collection/5642554087309312/5679846214598656
Lesson: https://www.educative.io/collection/page/5642554087309312/5679846214598656/100003