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Yos

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algorithms

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3	Prove $T$ is a BST iff for every node $x$ of $T$ that is not a leaf, the key of $x$ is larger or equal than the key of the left child of $x$
3	How to sort an array $A[1..n]$ with $\sqrt n$ distinct elements in $\Theta(n)$ time and $\Theta(\sqrt n)$ space?
2	If there's algorithm which returns true if Hamiltonian cycle exists in polynomial time then an algorithm to find the cycle in such time also exists?
2	How to find max flow in a graph after decrementing an edge capacity?
2	Suggest structure for query $sumRange(low,high)$ which returns sum of elements whose key $k$ satisfies $low \le k \le high$ in $\Theta(\log n)$ time

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0 algorithms × 16	0 data-structures × 3
0 graphs × 7	0 asymptotics × 3
0 formal-languages × 4	0 trees × 3
0 regular-languages × 4	0 correctness-proof × 2
0 time-complexity × 4	0 recurrence-relation × 2

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	Mathematics	1,168 rep	1923
	Stack Overflow	368 rep	415
	Computer Science	155 rep	12
	Database Administrators	138 rep	5
	Ask Ubuntu	128 rep	4

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