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//sortedList06.cpp //date: 09/16/2002 //author: AOU //Assignment #2 //Date assigned 9/13/2002 //Date due 9/23/2002 //Implement sortBubble2 //Algorithm and Implementation for isSorted //Supply detailed documentation for each member function //Test functions will be supplied and published //////////////////////////////////////////////////////////// // Include files //////////////////////////////////////////////////////////// #include<iostream.h> #include<math.h> #include<stdlib.h> #include<time.h> //////////////////////////////////////////////////////////// // Constants //////////////////////////////////////////////////////////// const int ARRAY_SIZE = 40; const int UNDEFINED = -9999; //////////////////////////////////////////////////////////// // Test function prototypes //////////////////////////////////////////////////////////// void testSortBubble2(void); void testSearchSeq(void); //////////////////////////////////////////////////////////// // Class CSortedList //////////////////////////////////////////////////////////// class CSortedList { private: int m_array[ARRAY_SIZE]; int m_count; int m_min; int m_max; void sortBubble1(void); public: CSortedList(void); CSortedList(char ch); void display(void); bool insert(int x); bool isSorted(void); void sortBubble2(void); void shuffle(void); int searchSeq(int x); }; //////////////////////////////////////////////////////////// // main function //////////////////////////////////////////////////////////// void main(void) { srand(time(NULL)); //testSortBubble2(); testSearchSeq(); } //////////////////////////////////////////////////////////// // searchSeq(x) //////////////////////////////////////////////////////////// /*Given sorted array[0..count-1], x [12, 23, 27, 29, 32], 27 => 2 [12, 23, 27, 29, 32], 24 => -1 Algorithm0: search for x from left to right in array[] if found return the position return -1 Algorithm1: for i=0 to count-1 do the following if x = array[i] then return i end for return -1 Algorithm2: for i=0 to count-1 do the following if x = array[i] then return i if x < array[i] then exit for loop end for return -1 */ int CSortedList::searchSeq(int x) { for (int i=0; i<=this->m_count-1; i++) { if (x == m_array[i]) return i; if (x < this->m_array[i]) break; } return -1; } void testSearchSeq(void) { for (int j=1; j<=5; j++) { CSortedList myList('r'); int x, p; myList.display(); for (int i=0; i<10; i++) { x = rand()%100; p = myList.searchSeq(x); cout << x << " was found at position " << p << endl; } cout << "-----------------\n"; } } //////////////////////////////////////////////////////////// // CSortedList(void) //////////////////////////////////////////////////////////// CSortedList::CSortedList(void) { this->m_count = 0; this->m_min = UNDEFINED; this->m_max = UNDEFINED; } //////////////////////////////////////////////////////////// // CSortedList(char ch) //////////////////////////////////////////////////////////// CSortedList::CSortedList(char ch) { this->m_count = 0; int x, n; if ('r' == ch) { n = rand()%ARRAY_SIZE+1; for (int i=0; i<n; i++) { x = rand()%100; this->insert(x);// or (*this).insert(); } } } //////////////////////////////////////////////////////////// // display(void) //////////////////////////////////////////////////////////// void CSortedList::display(void) { cout << "SortedList(" << this->m_count << ")= "; for (int i=0; i<this->m_count; i++) cout << this->m_array[i] << ' '; cout << endl; } //////////////////////////////////////////////////////////// // insert(int x) //////////////////////////////////////////////////////////// bool CSortedList::insert(int x) { //allow duplicate values /* there is no room then return false there is room then add to the end, sort, return true */ if (ARRAY_SIZE == this->m_count) return false; else { this->m_array[m_count] = x; this->m_count++; this->sortBubble1(); return true; } } //////////////////////////////////////////////////////////// // sortBubble1(void) //////////////////////////////////////////////////////////// void CSortedList::sortBubble1(void) { int j; for (int i=1; i<=this->m_count-1; i++) { for (j=0; j<=this->m_count-2; j++) { if (this->m_array[j] > this->m_array[j+1]) { int temp = this->m_array[j]; this->m_array[j] = this->m_array[j+1]; this->m_array[j+1] = temp; } } } } //////////////////////////////////////////////////////////// // sortBubble2(void) //////////////////////////////////////////////////////////// /* Algorithm0: do swaps =0 make one pass trying to put items in order until swaps == 0 Algorithm1: sorted = false while not sorted sorted = true make one pass trying to put items in order end while Algorithm2: sorted = false while not sorted sorted = true for i= 0 to m_count-2 do the following if m_array[i] > m_array[i+1] then swap m_array[i], m_array[i+1] sorted = false end if end for end while */ void CSortedList::sortBubble2(void) { } //////////////////////////////////////////////////////////// // testSortBubble2(void) //////////////////////////////////////////////////////////// void testSortBubble2(void) { for (int i=1; i<=10; i++) { CSortedList myList('r'); cout << "Original list\n"; myList.display(); if (myList.isSorted()) cout << " List is SORTED\n"; else cout << " List is NOT SORTED\n"; myList.shuffle(); cout << "Shuffled list\n"; myList.display(); if (myList.isSorted()) cout << " List is SORTED\n"; else cout << " List is NOT SORTED\n"; myList.sortBubble2(); cout << "After sortBubble2\n"; myList.display(); if (myList.isSorted()) cout << " List is SORTED\n"; else cout << " List is NOT SORTED\n"; cout << "-------------------\n"; } } //////////////////////////////////////////////////////////// // isSorted(void) //////////////////////////////////////////////////////////// bool CSortedList::isSorted(void) { return true; } //////////////////////////////////////////////////////////// // shuffle(void) //////////////////////////////////////////////////////////// void CSortedList::shuffle(void) { int picked, temp; for (int i=0; i<=this->m_count-1; i++) { picked = rand()%this->m_count; temp = this->m_array[0]; this->m_array[0] = this->m_array[picked]; this->m_array[picked] = temp; } } |