IQ Test
IQ Test
Description:
Bob is preparing to pass IQ test. The most frequent task in this test is to find out which one of the given numbers differs from the others
. Bob observed that one number usually differs from the others in evenness. Help Bob — to check his answers, he needs a program that among the given numbers finds one that is different in evenness, and return a position of this number.
!
Keep in mind that your task is to help Bob solve a real IQ test
, which means indexes of the elements start from 1 (not 0)
Examples :
IQ.Test("2 4 7 8 10") => 3 // Third number is odd, while the rest of the numbers are even
IQ.Test("1 2 1 1") => 2 // Second number is even, while the rest of the numbers are odd
using System; using System.Linq; public class IQ { public static int Test(string numbers) { //Your code is here... int[] array = numbers.Split(' ').Select(x => Convert.ToInt32(x)).ToArray(); int evenCount = array.Count(x => x % 2 == 0); int number = 1; if (evenCount > 1) { for (int i = 0; i < array.Length; i++) { if (array[i] % 2 == 1) { number = i + 1; break; } } } else { for (int i = 0; i < array.Length; i++) { if (array[i] % 2 == 0) { number = i + 1; break; } } } return number; } }
其他人的解法
int类的静态方法 public static int Parse(string s);
需要注意groupBy的返回值
using System; using System.Linq; public class IQ { public static int Test(string numbers) { var ints = numbers.Split(' ').Select(int.Parse).ToList(); var unique = ints.GroupBy(n => n % 2).OrderBy(c => c.Count()).First().First(); return ints.FindIndex(c => c == unique) + 1; } }
作者:Chuck Lu GitHub |
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