Write a method digitSum that accepts an integer parameter and returns the sum of its digits<\/p>\n\n\n\n
The correct answer and explanation is:<\/strong><\/mark><\/p>\n\n\n\n Here’s the correct implementation of the The The core idea is to repeatedly extract the last digit of the number using the modulus operator ( Let\u2019s break the logic down step by step:<\/p>\n\n\n\n For This method is efficient and works for any non-negative integer.<\/p>\n","protected":false},"excerpt":{"rendered":" Write a method digitSum that accepts an integer parameter and returns the sum of its digits The correct answer and explanation is: Here’s the correct implementation of the digitSum method in Java: Explanation (300 words) The digitSum method calculates the sum of the digits of a non-negative integer. This is a common task in programming […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-17679","post","type-post","status-publish","format-standard","hentry","category-quiz-questions"],"_links":{"self":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/17679","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/comments?post=17679"}],"version-history":[{"count":1,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/17679\/revisions"}],"predecessor-version":[{"id":17680,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/posts\/17679\/revisions\/17680"}],"wp:attachment":[{"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/media?parent=17679"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/categories?post=17679"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gaviki.com\/blog\/wp-json\/wp\/v2\/tags?post=17679"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}digitSum<\/code> method in Java:<\/p>\n\n\n\npublic static int digitSum(int number) {\n int sum = 0;\n while (number > 0) {\n sum += number % 10; \/\/ Add the last digit to sum\n number \/= 10; \/\/ Remove the last digit\n }\n return sum;\n}\n<\/code><\/pre>\n\n\n\n
\n\n\n\nExplanation (300 words)<\/strong><\/h3>\n\n\n\n
digitSum<\/code> method calculates the sum of the digits of a non-negative integer. This is a common task in programming that helps reinforce understanding of loops, arithmetic operations, and number manipulation.<\/p>\n\n\n\n%<\/code>)<\/strong>, and then remove that digit using integer division (\/<\/code>)<\/strong>.<\/p>\n\n\n\n\n
We begin by initializing a variable sum<\/code> to 0. This variable will keep track of the running total of the digits.<\/li>\n\n\n\n
A while<\/code> loop is used to process each digit. The condition number > 0<\/code> ensures that we continue looping until all digits have been processed.<\/li>\n\n\n\n
Inside the loop, number % 10<\/code> extracts the last digit of the number. For example, if number<\/code> is 29107, 29107 % 10<\/code> equals 7. This digit is then added to sum<\/code>.<\/li>\n\n\n\n
After extracting and adding the last digit, we remove it by dividing number<\/code> by 10 using integer division (number \/= 10<\/code>). Integer division discards the remainder, so 29107 \/ 10<\/code> becomes 2910.<\/li>\n\n\n\n
The loop repeats this process for each digit until number<\/code> becomes 0.<\/li>\n\n\n\n
Once the loop ends, sum<\/code> contains the total of all the digits, and we return this value.<\/li>\n<\/ol>\n\n\n\nExample<\/strong><\/h3>\n\n\n\n
digitSum(29107)<\/code>, the loop adds:<\/p>\n\n\n\n\n
Total = 2 + 9 + 1 + 0 + 7 = 19<\/strong><\/li>\n<\/ul>\n\n\n\n