Скачать или смотреть Find the Second Largest Number from an Array using C Programming Language

Find Second Largest element by traversing the array once (One Pass):
The idea is to keep track of the largest and second largest element while traversing the array. If an element is greater than the largest element, we update the largest as well as the second largest. Else if an element is smaller than largest but greater than second largest, then we update the second largest only.

Below is the complete algorithm for doing this:

Initialize the first as 0(i.e, index of arr[0] element
Start traversing the array from array[1],
If the current element in array say arr[i] is greater than first. Then update first and second as, second = first and first = arr[i]
If the current element is in between first and second, then update second to store the value of current variable as second = arr[i]
Return the value stored in second.

Regards,
Md. Ahsan Arif
University of Scholars
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