Count Even Numbers
Easy · rating 900 · arrays
The first line contains n. The second line contains n integers. Print how many of them are even.
Editorial
Count Even Numbers tallies how many array values are even. Scan once, testing each with x % 2 == 0.
print(sum(1 for x in nums if x % 2 == 0))Complexity
Time: O(n). Space: O(1).