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SortingandSearching

# SortingandSearching - Sorting and Searching Dr David...

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Sorting and Searching Dr. David Gaitros Department of Computer Science

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Sorting The arrangement of items in either ascending or descending order. Requires that two items can be compared and that some aspect or key portion of the items can be compared and that a relationship of less than, greater than, or equal to exists.
Example Let’s say that I have an array defined as below and that it has been loaded with numbers. The number of items in the array is defined by the variable ArraySize. double LargeArray[MAXSIZE]; int ArraySize; BubbleSort(LargeArray,ArraySize);

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// *********************************************************************** // Swap to double numbers. Used in the sorting routine twice. // ************************************************************************ void swap(double *num1,double *num2) { double temp = *num1; *num1 = *num2; *num2=temp; } // ************************************************************************ // Bubble Sort . // Go through the list until no exchanges are made. // Check adjacent pairs, if the first one is greater, swap them. // ************************************************************************ void BubbleSort (double *DBLArray, int ArraySize) { bool swapped=true; while (swapped) { swapped = false; for (int i=0; i<ArraySize-1; i++) { if( DBLArray[i] > DBLArray[i+1]) { swap(&DBLArray[i],&DBLArray[i+1]); swapped=true; } } }
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