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GeezerVison is showing github.com — Algorithms---Java/strings/ReverseString.java at master · PrideIceMan/Algorithms---Java Expand file tree/ Copy pathReverseString.javaMore file actions 41 lines (35 loc) · 959 Bytes / Copy pathReverseString.javaFile metadata and controls41 lines (35 loc) · 959 Bytes 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 package strings; /** Reverse String using different version */ public class ReverseString { public static void main(String[] args) { assert reverse("abc123").equals("321cba"); assert reverse2("abc123").equals("321cba"); } /** * easiest way to reverses the string str and returns it * * @param str string to be reversed * @return reversed string */ public static String reverse(String str) { return new StringBuilder(str).reverse().toString(); } /** * second way to reverses the string str and returns it * * @param str string to be reversed * @return reversed string */ public static String reverse2(String str) { if (str == null || str.isEmpty()) { return str; } char[] value = str.toCharArray(); for (int i = 0, j = str.length() - 1; i < j; i++, j--) { char temp = value[i]; value[i] = value[j]; value[j] = temp; } return new String(value); } } |
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