在 Java 中，可以通过以下六种方法来反转字符串：使用 StringBuilder使用 CharArray使用 Collections.reverse()使用迭代器使用位运算符使用递归
如何使用 Java 反转字符串
在 Java 中，可以通过以下几种方法来反转字符串：
1. 使用 StringBuilder
2. 使用 CharArray
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3. 使用 Collections.reverse()
4. 使用迭代器
5. 使用位运算符
6. 使用递归
String originalString = "Hello World";
StringBuilder reversedString = new StringBuilder();
for (int i = originalString.length() - 1; i >= 0; i--) {
reversedString.append(originalString.charAt(i));
}
System.out.println(reversedString.toString());String originalString = "Hello World";
char[] chars = originalString.toCharArray();
for (int i = 0; i < chars.length / 2; i++) {
char temp = chars[i];
chars[i] = chars[chars.length - i - 1];
chars[chars.length - i - 1] = temp;
}
String reversedString = new String(chars);
System.out.println(reversedString);String originalString = "Hello World";
List chars = new ArrayList<>();
for (char c : originalString.toCharArray()) {
chars.add(c);
}
Collections.reverse(chars);
StringBuilder reversedString = new StringBuilder();
for (char c : chars) {
reversedString.append(c);
}
System.out.println(reversedString.toString()); String originalString = "Hello World";
List chars = new ArrayList<>();
for (char c : originalString.toCharArray()) {
chars.add(c);
}
Iterator iterator = chars.iterator();
while (iterator.hasNext()) {
char c = iterator.next();
iterator.remove();
chars.add(0, c);
}
StringBuilder reversedString = new StringBuilder();
for (char c : chars) {
reversedString.append(c);
}
System.out.println(reversedString.toString()); String originalString = "Hello World";
int n = originalString.length();
char[] chars = originalString.toCharArray();
for (int i = 0; i < n / 2; i++) {
chars[i] ^= chars[n - i - 1];
chars[n - i - 1] ^= chars[i];
chars[i] ^= chars[n - i - 1];
}
String reversedString = new String(chars);
System.out.println(reversedString);String originalString = "Hello World";
public static String reverseStringRecursively(String str) {
if (str == null || str.length() == 0) {
return str;
}
return reverseStringRecursively(str.substring(1)) + str.charAt(0);
}
String reversedString = reverseStringRecursively(originalString);
System.out.println(reversedString);