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Feliks-WRvs.AC39Failed Tests

Write your own sum()

  • No need for redundant size == 1 check!
  • Also added template
Code
Diff
  • #include <vector>    
#include <numeric>

template <typename T = double>
int sum(const std::vector<T>& v) {
   return v.size() == 0   ? -1
          : std::accumulate(v.begin(), v.end(), 0);
}
    • #include <vector>
    • #include <numeric>
    • int sum(std::vector<int>& v) {
    • template <typename T = double>
    • int sum(const std::vector<T>& v) {
    • return v.size() == 0 ? -1
    • : v.size() == 1 ? v[0]
    • : std::accumulate(v.begin(), v.end(), 0);
    • }