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    <p>Per modifications to the original post, where the OP is now indicating that his goal is to reverse the letter order of the words within a sentence, but to leave the words in their initial positions.</p> <p>The simplest way to do this, I think, is to make use of the String <code>split</code> function, iterate through the words, and reverse their orders.</p> <pre><code>String[] words = sentence.split(" "); // splits on the space between words for (int i = 0; i &lt; words.length; i++) { String word = words[i]; System.out.print(reverseWord(word)); if (i &lt; words.length-1) { System.out.print(" "); // space after all words but the last } } </code></pre> <p>Where the method <code>reverseWord</code> is defined as:</p> <pre><code>public String reverseWord(String word) { for( int i = 0; i &lt; word.length(); i++) { stk.push(word.charAt(i)); } return stk.empty(); } </code></pre> <p>And where the <code>empty</code> method has been changed to:</p> <pre><code>public String empty() { String stackWord = ""; while (this.first != null) stackWord += this.pop(); return stackWord; } </code></pre> <p><strong>Original response</strong></p> <p>The original question indicated that the OP wanted to completely reverse the sentence.</p> <p>You've got a double-looping construct where you don't really need it.</p> <p>Consider this logic:</p> <ol> <li>Read each character from the input string and push that character to the stack</li> <li>When the input string is empty, pop each character from the stack and print it to screen.</li> </ol> <p>So:</p> <pre><code>for( int i = 0; i &lt; sentence.length(); i++) { stk.push(sentence.charAt(i)); } stk.empty(); </code></pre>
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    1. POReversing characters in each word in a sentence - Stack Implementation
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    1. COmaybe two loops, one to reverse characters, then one to reverse words. OP wants the sentence with the same word order, each word reversed
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      1. USJakob Weisblat
    2. CO@Jake223 -- the OP changed his post. The original indicated a perfectly reversed sentence. I will edit my response.
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