How to Find a number which appears once and other numbers are twice ?

[Question]: In a given random array find a number which appears only single time Example : Random array input – [9,2,2,3,4,4,3] output = 9Solution: Step 1: Create a dictionary. Step 2: Create loop and fill the keys with element occurrence.Step 3: Create a loop and return the dictionary element which has only single occurrence .T …

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