57 lines
1.3 KiB
Java
57 lines
1.3 KiB
Java
package com.baeldung.string.reverse;
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import org.apache.commons.lang3.StringUtils;
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public class ReverseStringExamples {
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public static String reverse(String input) {
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if (input == null) {
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return null;
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}
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String output = "";
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for (int i = input.length() - 1; i >= 0; i--) {
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output = output + input.charAt(i);
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}
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return output;
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}
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public static String reverseUsingStringBuilder(String input) {
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if (input == null) {
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return null;
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}
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StringBuilder output = new StringBuilder(input).reverse();
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return output.toString();
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}
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public static String reverseUsingApacheCommons(String input) {
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return StringUtils.reverse(input);
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}
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public static String reverseTheOrderOfWords(String sentence) {
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if (sentence == null) {
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return null;
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}
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StringBuilder output = new StringBuilder();
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String[] words = sentence.split(" ");
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for (int i = words.length - 1; i >= 0; i--) {
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output.append(words[i]);
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output.append(" ");
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}
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return output.toString()
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.trim();
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}
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public static String reverseTheOrderOfWordsUsingApacheCommons(String sentence) {
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return StringUtils.reverseDelimited(sentence, ' ');
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}
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}
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