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public static String reverse(String word) {



    if (word == null || "".equals(word) || word.length() == 1) {

        throw new IllegalArgumentException("Invalid Entry");

    }



    StringBuilder result = new StringBuilder();



    for (int i=word.length() - 1; i >= 0; i--) {

        result.append(word.charAt(i));

    }



    return result.toString();

 }

public static String reverse ( String s ) {

    int length = s.length(), last = length - 1;

    char chars = s.toCharArray();

    for ( int i = 0; i < length/2; i++ ) {

        char c = chars[i];

        chars[i] = chars[last - i];

        chars[last - i] = c;

    }

    return new String(chars);

}

public static String reverse(String word) {



    if (word == null || "".equals(word) || word.length() == 1) {

        throw new IllegalArgumentException("Invalid Entry");

    }



    StringBuilder result = new StringBuilder();



    for (int i=word.length() - 1; i >= 0; i--) {

        result.append(word.charAt(i));

    }



    return result.toString();

 }

public static String reverse ( String s ) {

    int length = s.length(), last = length - 1;

    char chars = s.toCharArray();

    for ( int i = 0; i < length/2; i++ ) {

        char c = chars[i];

        chars[i] = chars[last - i];

        chars[last - i] = c;

    }

    return new String(chars);

}

public static String reverse(String word) {



    if (word == null || "".equals(word) || word.length() == 1) {

        throw new IllegalArgumentException("Invalid Entry");

    }



    StringBuilder result = new StringBuilder();



    for (int i=word.length() - 1; i >= 0; i--) {

        result.append(word.charAt(i));

    }



    return result.toString();

 }

public static String reverse ( String s ) {

    int length = s.length(), last = length - 1;

    char chars = s.toCharArray();

    for ( int i = 0; i < length/2; i++ ) {

        char c = chars[i];

        chars[i] = chars[last - i];

        chars[last - i] = c;

    }

    return new String(chars);

}

public static String reverse(String word) {



    if (word == null || "".equals(word) || word.length() == 1) {

        throw new IllegalArgumentException("Invalid Entry");

    }



    StringBuilder result = new StringBuilder();



    for (int i=word.length() - 1; i >= 0; i--) {

        result.append(word.charAt(i));

    }



    return result.toString();

 }

public static String reverse ( String s ) {

    int length = s.length(), last = length - 1;

    char chars = s.toCharArray();

    for ( int i = 0; i < length/2; i++ ) {

        char c = chars[i];

        chars[i] = chars[last - i];

        chars[last - i] = c;

    }

    return new String(chars);

}

Your Answer

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