<\/p>\n\r\nclass runner\r\n\tpublic static void main (String[] args) throws java.lang.Exception{\r\n\t\tlong time = System.currentTimeMillis();\r\n\r\n\t\tUnsignedBigInteger num = new UnsignedBigInteger(1);\r\n\t\tfor(int i = 100; i>0; i--){\r\n\t\t\tnum.multiply(i);\r\n\t\t}\r\n \r\n\t\tdouble sum = 0;\r\n\t\tfor(int i = 0; i< num.length(); i++){\r\n\t\t\tsum += num.get(i);\r\n\t\t}\r\n\t\tSystem.out.println(sum);\r\n\t\tSystem.out.println(\"time: \"+(System.currentTimeMillis() - time));\r\n\t}\r\n}\r\n<\/pre>\n<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"
Problem 20: Find the sum of the digits in the number 100!<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[56],"tags":[],"_links":{"self":[{"href":"https:\/\/www.joshho.com\/blog\/wp-json\/wp\/v2\/posts\/478"}],"collection":[{"href":"https:\/\/www.joshho.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.joshho.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.joshho.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.joshho.com\/blog\/wp-json\/wp\/v2\/comments?post=478"}],"version-history":[{"count":0,"href":"https:\/\/www.joshho.com\/blog\/wp-json\/wp\/v2\/posts\/478\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.joshho.com\/blog\/wp-json\/wp\/v2\/media?parent=478"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.joshho.com\/blog\/wp-json\/wp\/v2\/categories?post=478"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.joshho.com\/blog\/wp-json\/wp\/v2\/tags?post=478"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}