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2d barcode generator vb.net TeamLRN in Software
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EAN13 Generation In .NET Framework Using Barcode creation for ASP.NET Control to generate, create EAN13 image in ASP.NET applications. Draw European Article Number 13 In Visual Studio .NET Using Barcode drawer for .NET framework Control to generate, create EAN13 image in Visual Studio .NET applications. EXAMPLE 6.14 The Binary Search Algorithm
Generating EAN13 In Visual Basic .NET Using Barcode encoder for .NET framework Control to generate, create EAN13 image in .NET applications. Make Code 128 In None Using Barcode generator for Software Control to generate, create Code128 image in Software applications. This program tests a function that implements the Binary Search algorithm. It uses the same test driver that was used in Example 6.12 on page 133 to test the Linear Search algorithm: int index(int,int[],int); int main() { int a[] = { 22, 33, 44, 55, 66, 77, 88 }; cout << "index(44,a,7) = " << index(44,a,7) << endl; cout << "index(60,a,7) = " << index(60,a,7) << endl; } int index(int x, int a[], int n) { // PRECONDITION: a[0] <= a[1] <= ... <= a[n1]; // binary search: int lo=0, hi=n1, i; while (lo <= hi) { i = (lo + hi)/2; // the average of lo and hi if (a[i] == x) return i; if (a[i] < x) lo = i+1; // continue search in a[i+1..hi] else hi = i1; // continue search in a[lo..i1] } return n; // x was not found in a[0..n1] } index(44,a,7) = 2 index(60,a,7) = 7 Note that the array is already sorted before the Binary Search is applied. That requirement is expressed in the PRECONDITION specified as a comment in the function s code. On each iteration of the while loop, the middle element a[i] of the subarray a[lo..hi] (i.e., all the elements from a[lo] to a[hi]) is examined. If it is not the target x, then the search continues either on the upper half a[i+1..hi] or on the lower half a[lo..i1]. If (a[i] < x), then x could not be in the lower half (since the array is sorted into increasing order), so the lower half can be ignored and the search continued on only the upper half. Similarly, if the condition (a[i] < x) is false, then the search is continued on only the lower half. So on each iteration of the loop, the scope of the search is reduced by about 50%. The loop stops either when x is found at a[i] and the function returns, or when lo > hi. In that latter case, the subarray a[lo..hi] is empty, meaning that x was not found, so the function returns n. Here is a trace of the call index(44,a,7). When lo hi i a[i] x the loop begins, x = 44, n = 7, lo = 0, and hi = 6; the 0 6 3 55 > 44 middle element of the array a[0..6] is a[3] = 55 2 1 33 < 44 which is greater than x, so hi gets reset to i1 = 2. On the second iteration, lo = 0 and hi = 2; the middle 2 2 44 == 44 element of the subarray a[0..2] is a[1] = 33 which is less than x, so lo gets reset to i+1 = 2. On the third iteration, lo = 2 and hi = 2; the middle element of the subarray a[2..2] is a[2] = 44 which is equal to x, so the function returns 2, indicating that the target x is was found at a[2]. Here is a trace of the call index(60,a,7). When lo hi i a[i] x the loop begins, x = 44, n = 7, lo = 0, and hi = 6; the 0 6 3 55 < 60 middle element of the array a[0..6] is a[3] = 55 4 5 77 > 60 which is less than x, so lo gets reset to i+1 = 4. On the second iteration, lo = 4 and hi = 6; the middle element 4 4 66 > 60 of the subarray a[4..6] is a[5] = 77 which is Create GTIN  128 In None Using Barcode generator for Software Control to generate, create EAN / UCC  14 image in Software applications. UPC Symbol Creator In None Using Barcode generator for Software Control to generate, create UPC Code image in Software applications. ARRAYS
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