Finding repeated words on a string and counting the repetitions

Question

I need to find repeated words on a string, and then count how many times they were repeated. So basically, if the input string is this:

String s = \"House, House         


        

Answer 1

Use Function.identity() inside Collectors.groupingBy and store everything in a MAP.

String a  = "Gini Gina Gina Gina Gina Protijayi Protijayi "; 
        Map map11 = Arrays.stream(a.split(" ")).collect(Collectors
                .groupingBy(Function.identity(),Collectors.counting()));
        System.out.println(map11);

// output => {Gina=4, Gini=1, Protijayi=2}

In Python we can use collections.Counter()

a = "Roopa Roopi  loves green color Roopa Roopi"
words = a.split()

wordsCount = collections.Counter(words)
for word,count in sorted(wordsCount.items()):
    print('"%s" is repeated %d time%s.' % (word,count,"s" if count > 1 else "" ))

Output :

"Roopa" is repeated 2 times. "Roopi" is repeated 2 times. "color" is repeated 1 time. "green" is repeated 1 time. "loves" is repeated 1 time.