hw-the length of the last word in a string, separated by a space.

Describe	Calculates the length of the last word in a string, separated by a space.
Knowledge points	String, looping
Run time limit	0M
Memory limit	0
Input	A line of strings that are less than 128 in length.
Output	Integer n, the length of the last word.
Sample input	Hello World
Sample output	5

Test OK Code:

ImportJava.util.Scanner; Public classmain{ Public Static voidMain (string[] args) {inti; //System.out.println ("Please enter string:"); Scanner Scstr =NewScanner (system.in);//get a string from the keyboardString str = scstr.nextline ();//take the contents of the scanner object as a string         Chararr[]=Str.tochararray ();  for(i=arr.length-1;i>=0;i--){             if(arr[i]== ")              Break; }             intlength=arr.length-i; Charshuchu[]=New Char[Length-1];intK=0;  for(intj=i+1;j<=arr.length-1;j++) {Shuchu[k]=ARR[J]; k++; }        //System.out.println ("The Last Word is:");System.out.println (k); }     }

hw-the length of the last word in a string, separated by a space.