Design an algorithm that determines the length of an array A. The only thing the algorithm can do to the array is attempt to obtain the value that is stored at a non-negative index i. Either the attempt will succeed, or it will result in an exception. Your algorithm must be O(log n), where n is the (unknown) length of A. There will be two distinct phases in your algorithm. In two or three succinct sentences, explain the key ideas behind the first phase.

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the major difference between the two is the objective and the reward of the game. candy crush has a puzzle theme with the objective of meeting a specific quota of points or objects, you are able to gain access to the next level and compete with peers on the process. on duolingo the objective is rather different, you are given sets of questions for you to answer for you to move to the next level and as for the reward, you are able to learn available language as this is an app developed to teach the user about other languages.

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