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[29/07, 5:03 pm] +91 97169 61832: Interviewer only aksed two questions 
tell me about useEffect how this works and how this work with depencies 

const arr = [1,2,3,4,5]
Make sets off values add up to target values
[29/07, 5:03 pm] +91 97169 61832: Us. useEffect hook
Dependencies array inside useEffect
Simple array given 1,2,3,4,5,6 
Print set of elements which is equal to 5