Write a function that will check if two given characters are the same case.
If either of the characters is not a letter, return -1
If both characters are the same case, return 1
If both characters are letters, but not the same case, return 0
Examples
'a' and 'g' returns 1
'A' and 'C' returns 1
'b' and 'G' returns 0
'B' and 'g' returns 0
'0' and '?' returns -1
public class Kata {
public static int SameCase(char a, char b) {
string letters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
char tempA = a;
char tempB = b;
if((!letters.Contains(tempA = char.ToUpper(tempA)) && letters.Contains(tempB = char.ToUpper(tempB))) ||
(!letters.Contains(tempB = char.ToUpper(tempB)) && letters.Contains(tempA = char.ToUpper(tempA))) ||
(!letters.Contains(tempA = char.ToUpper(tempA)) && !letters.Contains(tempB = char.ToUpper(tempB)))) return -1;
if(char.IsUpper(a) && char.IsUpper(b)){
return 1;
} else if (char.IsLower(a) && char.IsLower(b)){
return 1;
} else {
return 0;
}
}
}namespace Solution {
using NUnit.Framework;
using System;
[TestFixture]
public class SolutionTest
{
[Test]
public void TrueTests()
{
Assert.AreEqual(1, Kata.SameCase('a', 'u'));
Assert.AreEqual(1, Kata.SameCase('A', 'U'));
Assert.AreEqual(1, Kata.SameCase('Q', 'P'));
Assert.AreEqual(1, Kata.SameCase('w', 'y'));
Assert.AreEqual(1, Kata.SameCase('c', 'm'));
Assert.AreEqual(1, Kata.SameCase('N', 'W'));
}
[Test]
public void FalseTests()
{
Assert.AreEqual(0, Kata.SameCase('a', 'U'));
Assert.AreEqual(0, Kata.SameCase('A', 'u'));
Assert.AreEqual(0, Kata.SameCase('Q', 'p'));
Assert.AreEqual(0, Kata.SameCase('w', 'Y'));
Assert.AreEqual(0, Kata.SameCase('c', 'M'));
Assert.AreEqual(0, Kata.SameCase('N', 'w'));
}
[Test]
public void NotLetters()
{
Assert.AreEqual(-1, Kata.SameCase('a', '*'));
Assert.AreEqual(-1, Kata.SameCase('A', '%'));
Assert.AreEqual(-1, Kata.SameCase('Q', '1'));
Assert.AreEqual(-1, Kata.SameCase('w', '-'));
Assert.AreEqual(-1, Kata.SameCase('c', '8'));
Assert.AreEqual(-1, Kata.SameCase('N', ':'));
}
[Test]
public void RandomTest() {
string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmopqrstuvwxyz1234567890~/*-+:.,><.#@!&";
Random rand = new Random();
char char1 = 'a';
char char2 = 'a';
for (int i = 0; i < 200; i++) {
char1 = chars[rand.Next(0,76)];
char2 = chars[rand.Next(0,76)];
Assert.AreEqual(SameCaseSolution(char1,char2), Kata.SameCase(char1, char2));
}
}
private static int SameCaseSolution(char a, char b) {
if (!char.IsLetter(a) || !char.IsLetter(b)) return -1;
if ((a >= 97) == (b >= 97)) return 1;
return 0;
}
}
}