Reversing a String using Stack in Java

ReverseStringWithStack.java

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// create a stack of characters
Stack<Character> st = new Stack<Character>();

// convert string to reverse into an array of characters
char[] arr = str.toCharArray();

// iterate chars array and push each char into the stack
for(char c : arr){
	st.push(c);
}

// pop all chars from the stack into the new array
for(int i = 0; i < arr.length; i++){
	arr[i] = st.pop();
}

// print reversed string
System.out.println(new String(arr));

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