why we used return type int instead of void if we were wanting to only store the value in out. Along with that explain me point of returning j
Didn't understood point of returning j
all the occurences are stored in out array
now to print them you need size of out array(count of occurences of key)
here j is size of out array so we need to return j
that is also the reason why we use int as a return type instead of void
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