Unformatted text preview: Problem A7.2 (C). Let A be a n × n integer matrix, and is sorted in the nonincreasing order within each row and each column. Let x be an integer. Describe an algorithm that makes O ( n ) comparisons to decide if x appears in A . Prove the correctness and the time complexity of your algorithm. * Extra Credit Problem A7.3. Let A be an array of n integers A [0], A [1], ··· , A [ n1]. Describe a O ( n ) algorithm that ﬁnds max { A [ i ] + A [ i + 1] + ··· + A [ j ] : 0 ≤ i ≤ j ≤ n1 } . Prove the correctness and the time complexity of your algorithm. 1...
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 Winter '07
 YaoyunShi

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