EBK DATA STRUCTURES AND ALGORITHMS IN C
EBK DATA STRUCTURES AND ALGORITHMS IN C
4th Edition
ISBN: 9781285415017
Author: DROZDEK
Publisher: YUZU
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Chapter 2, Problem 7E

Explanation of Solution

Length of longest subarray:

Given an integer array that is in increasing order, finding length of longest subarray that contains numbers that could be arranged in a continous sequence.

Worst case complexity analysis:

Refer section 2.7 in chapter 2 for given algorithm

  • If line for(i=0, length = 1;i<n-1;i++) is been replaced by line for(i=0, length =1; i<n-1 && length<n-i; i++) in the given algorithm.
  • The best case remains O(n), when numbers in array maintain decreasing order.
  • For each n-1 executions of outer loopthe inner loop is been executed just once.
  • For an ordered array, inner loop executes n-1 times and outer loop executes only once, which denotes best case.
  • The worst case complexity of algorithm is still O(n2).

Worst case efficiency:

Yes, the efficiency of the worst case is still O(n2)

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