Analyze SELECT to show that if n 140, then at least $\lceil n/4 \rcieil elements are greater than the median-of-medians x and at least $\lceil n/4 \rcieil elements are less than x. if we draw a 5 X 5 grid. we have 3n/10 greater than x and 3n/10 elements are less than x. 3 140/10 = 42 n/4 = 140/4 = 35
Saturday, March 2, 2013
9.3-2
Analyze SELECT to show that if n 140, then at least $\lceil n/4 \rcieil elements are greater than the median-of-medians x and at least $\lceil n/4 \rcieil elements are less than x. if we draw a 5 X 5 grid. we have 3n/10 greater than x and 3n/10 elements are less than x. 3 140/10 = 42 n/4 = 140/4 = 35
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