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Given an array of size N in which every number is between 1
and N, determine if there are any duplicates in it. You are
allowed to destroy the array if you like.

Answer Posted / michael

hey scrubs, use a hash map

loop through array {
if(hash[x] == x] return true// is dupe
else hash.add(x,x);
}

max O(n)

Is This Answer Correct ?    6 Yes 4 No



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