31 lines
766 B
C++
31 lines
766 B
C++
|
#include <cassert>
|
||
|
#include <iostream>
|
||
|
#include <limits>
|
||
|
|
||
|
/* return the second-largest element of an array
|
||
|
* of N integer values (must contain at least two values)
|
||
|
*/
|
||
|
int second_of(const int N, const int* const x) {
|
||
|
assert(N >= 2);
|
||
|
int largest = x[0];
|
||
|
|
||
|
// smallest possible int value
|
||
|
int second_largest = std::numeric_limits<int>::min();
|
||
|
|
||
|
for(int i = 1; i < N; i++)
|
||
|
if(x[i] > largest) {
|
||
|
second_largest = largest;
|
||
|
largest = x[i];
|
||
|
}
|
||
|
else if(x[i] > second_largest)
|
||
|
second_largest = x[i];
|
||
|
return second_largest;
|
||
|
}
|
||
|
|
||
|
int main() {
|
||
|
constexpr int fixed_array_size = 5;
|
||
|
constexpr int x[fixed_array_size] = {4, 0, 6, 5, 2};
|
||
|
const int t = second_of(fixed_array_size, x);
|
||
|
std::cout << t << "\n";
|
||
|
}
|