文字列のすべての文字を小文字に変換してアルファベット順に並べます

Question

私の出力は、最初に大文字を得て、大文字をアルファベット順に並べ、アルファベット順に並べます。最初に大文字を小文字に変換してから、目的の出力に応じてアルファベット順に並べ替え、変更はcollectLetters（）メソッドでのみ行われるはずです。誰も私にこれを助けてくれますか？前もって感謝します。

public class QuizIID 
{ 

public static String collectLetters(String text) 
{ 
    char[] charArray = text.toCharArray(); 
    Arrays.sort(charArray); 
    String sortedString = new String(charArray); 
return sortedString; 
} 

// runTestの方法

private static boolean runTest(int testNum, String p0, boolean hasAnswer, String p1) 
{ 
    System.out.print("Test #" + testNum + ": [" + "\"" + p0 + "\""); 
    System.out.println("]"); 
    String answer; 
    answer = collectLetters(p0); 
    boolean res; 
    res = true; 

    if (hasAnswer) { 
     System.out.println("Desired answer:"); 
     System.out.println("\t" + "\"" + p1 + "\""); 
    } 
    System.out.println("Your answer:"); 
    System.out.println("\t" + "\"" + answer + "\""); 
    if (hasAnswer) { 
     res = answer.equals(p1); 
    } 
    if (!res) { 
     System.out.println("DOESN'T MATCH!!!!"); 
    } else if (hasAnswer) { 
     System.out.println("Correct!"); 
    } 
    System.out.println(); 
    return res; 
} 

//メインメソッド

public static void main(String[] args) { 
    int count = 0; 

    String p0; 
    String p1; 

    // ----- test 1 ----- 
    p0 = "She sells sea shells"; 
    p1 = "aeeeehhllllssssss"; 
    if(runTest(1, p0, true, p1)) count++; 
    // ------------------ 

    // ----- test 2 ----- 
    p0 = "ReMemBEr To IgnoRE CASe"; 
    p1 = "abceeeeegimmnoorrrst"; 
    if(runTest(2, p0, true, p1)) count++; 
    // ------------------ 

    // ----- test 3 ----- 
    p0 = "12345"; 
    p1 = ""; 
    if(runTest(3, p0, true, p1)) count++; 
    // ------------------ 

    // ----- test 4 ----- 
    p0 = "Programming III is fun"; 
    p1 = "afggiiiiimmnnoprrsu"; 
    if(runTest(4, p0, true, p1)) count++; 
    // ------------------ 

    // ----- test 5 ----- 
    p0 = "Knights are better than Bishops"; 
    p1 = "aabbeeeghhhiiknnoprrssstttt"; 
    if(runTest(5, p0, true, p1)) count++; 
    // ------------------ 

    System.out.print(count + " out of 5"); 
    if (count == 5) 
    { 
     System.out.println("!"); 
    } 
    else 
    { 
    System.out.println("."); 
    } 
} 
} 

//所望の出力

----jGRASP exec: java QuizIID -Xlint:unchecked 
Test #1: ["She sells sea shells"] 
Desired answer: 
    "aeeeehhllllssssss" 
Your answer: 
    "aeeeehhllllssssss" 
Correct! 

Test #2: ["ReMemBEr To IgnoRE CASe"] 
Desired answer: 
    "abceeeeegimmnoorrrst" 
Your answer: 
    "abceeeeegimmnoorrrst" 
Correct! 

Test #3: ["12345"] 
Desired answer: 
    "" 
Your answer: 
    "" 
Correct! 

Test #4: ["Programming III is fun"] 
Desired answer: 
    "afggiiiiimmnnoprrsu" 
Your answer: 
    "afggiiiiimmnnoprrsu" 
Correct! 

Test #5: ["Knights are better than Bishops"] 
Desired answer: 
    "aabbeeeghhhiiknnoprrssstttt" 
Your answer: 
    "aabbeeeghhhiiknnoprrssstttt" 
Correct! 

5 out of 5! 

----jGRASP: operation complete. 

//私の出力

----jGRASP exec: java QuizIID 
Test #1: ["She sells sea shells"] 
Desired answer: 
"aeeeehhllllssssss" 
Your answer: 
" Saeeeehhllllsssss" 
DOESN'T MATCH!!!! 

Test #2: ["ReMemBEr To IgnoRE CASe"] 
Desired answer: 
"abceeeeegimmnoorrrst" 
Your answer: 
"ABCEEIMRRSTeeegmnoor" 
DOESN'T MATCH!!!! 

Test #3: ["12345"] 
Desired answer: 
"" 
Your answer: 
"12345" 
DOESN'T MATCH!!!! 

    Test #4: ["Programming III is fun"] 
    Desired answer: 
    "afggiiiiimmnnoprrsu" 
    Your answer: 
    " IIIPafggiimmnnorrsu" 
    DOESN'T MATCH!!!! 

    Test #5: ["Knights are better than Bishops"] 
    Desired answer: 
    "aabbeeeghhhiiknnoprrssstttt" 
    Your answer: 
    " BKaabeeeghhhiinnoprrssstttt" 
    DOESN'T MATCH!!!! 

    0 out of 5. 

    ----jGRASP: operation complete. 

Answer 1

これはregular expressionを使用しています

char[] charArray = text.toLowerCase().replaceAll("[^\\p{Lower}]","").toCharArray(); 

によってライン

char[] charArray = text.toCharArray(); 

を交換してください。

たRunnable例：

https://ideone.com/WSvUZy