ALGO-XR(A, t, i, r) 1 while i s A. length 2 ALGO-X(A) 1 return ALGO-XR(A, 0, 1,2) if r--0 if A[i] -- t 3 4 5 return TRUE else if ALGO-XR(A, t – A[i], i + 1,r – 1) return TRUE i - i+1 8 return FALSE 7

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Q: Consider the following algorithm Algo-X that takes an array A of n numbers and explain working of this algorithm:

ALGO-X(A)
ALGO-XR(A, t, i, r)
1 return ALGO-XR(A, 0, 1, 2)
1 while i s A. length
2
if r -- 0
3
if A[i] =- t
4
return TRUE
else if ALGO-XR(A, t – A[i), i + 1,r – 1)
return TRUE
i - i+1
8 return FALSE
7
Transcribed Image Text:ALGO-X(A) ALGO-XR(A, t, i, r) 1 return ALGO-XR(A, 0, 1, 2) 1 while i s A. length 2 if r -- 0 3 if A[i] =- t 4 return TRUE else if ALGO-XR(A, t – A[i), i + 1,r – 1) return TRUE i - i+1 8 return FALSE 7
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