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codility.com questions 1. assuming you have a binary tree which stores integers, count the number of nodes whose value is lower than the value of its upper nodes. 2. simple sql with "having" restriction 3. given an array with elements check if just by exchanging two elements of the array we get a sorted array. time restriction: O(NlogN) space restriction: 2N
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Java Software Engineer

Interviewed at rebuy

4.4★
Feb 10, 2015

codility.com questions 1. assuming you have a binary tree which stores integers, count the number of nodes whose value is lower than the value of its upper nodes. 2. simple sql with "having" restriction 3. given an array with elements check if just by exchanging two elements of the array we get a sorted array. time restriction: O(NlogN) space restriction: 2N

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