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Thread: Need help on ideas to approach this String problem..

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    Default Need help on ideas to approach this String problem..

    I am not very comfortable with Strings in Java. I have a pretty knowledgeable background in C, and I learned that it is not the way to approach problems in Java with a "C" mindset.

    The problem I am facing is, taking a string that contains a sentence and reversing the words. Example would be, "Hi I am Bob" and changing it to "Bob am I Hi". Then returning the String.

    My initial thoughts were to change the string into a character array and then manually doing the work with loops and tedious comparison statements. I quickly realized that there must be a better way but I am not very familiar with strings in Java to know what a more sufficient way would be. Any thoughts/Suggestions would be greatly appreciated.
    Thank you.


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    Default Re: Need help on ideas to approach this String problem..

    Yes, your C mindset is handicapping you. The String class has many methods that will help you do what you've described. Refer to the String documentation of API. If you're not familiar with finding it, simply search 'java string doc', and the top two or 3 results should be what you're looking for.

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    Default Re: Need help on ideas to approach this String problem..

    	public static void main(String[] args) {
     
    		String a = "Hi I am Bob";
    		String[] words = a.split(" ");
    		String newOne= "";
     
    		for(int i=words.length-1;i>=0;i--)
    		{
    			newOne+=words[i];
    			newOne+=" ";
    		}
     
    		System.out.println(newOne);
    	}
     
    }

    This is what I came up with. Do you agree that Split is a well used method for this exercise? I also thought that substring might be a good method to use but have not done it that way yet.

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    Default Re: Need help on ideas to approach this String problem..

    Split would be fine for this. Although if you have a period at the end, the period would move with the last word. Not a big problem, though.
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