Write a program that reads an integer between 0 and 1000 and adds all the digits in the integer. For example, if an integer is 932, the sum of all its digits is 14. Hint: Use the % operator to extract digits, and use the / operator to remove the extracted digit. For instance, 932 % 10 = 2 and 932 / 10 = 93.
Here is a sample run:
Breaking it down
This example will use java 8 though there are several ways to approach this problem. Storing in a string read from the user input we will initialize a stream by splitting the string on each character. Since the
Stream is of type
String we need to map values by using
mapToInt. Finally calling the
Stream.sum() will calculate the sum of the digits.