{"id":14435,"date":"2022-10-07T19:55:38","date_gmt":"2022-10-07T14:25:38","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-working-of-these-two-lines-of-code-in-the-program-closed\/"},"modified":"2022-10-07T19:55:38","modified_gmt":"2022-10-07T14:25:38","slug":"solved-working-of-these-two-lines-of-code-in-the-program-closed","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-working-of-these-two-lines-of-code-in-the-program-closed\/","title":{"rendered":"[Solved] working of these two lines of code in the program [closed]"},"content":{"rendered":"

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The total<\/code> variable will contain the number of unique<\/em> characters in the array str<\/code>.<\/p>\n

This happens because you increment the count(total+=!used[str[i]-'a']<\/code>) only if you haven’t already marked the character as visited. If you incremented it, you mark it as such in the next line (used[str[i]-'a']=1<\/code>) so that you wont count it again. <\/p>\n

The notation str[i]-'a'<\/code> is used to shift the ascii values of the characters from 0<\/em> to 25<\/em> (instead of 97<\/em> to 122<\/em>) so that you can spare some space in the array.<\/p>\n<\/p><\/div>\n

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9<\/span> <\/p><\/div>\n<\/div>\n

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solved working of these two lines of code in the program [closed] <\/p>\n","protected":false},"excerpt":{"rendered":"

[ad_1] The total variable will contain the number of unique characters in the array str. This happens because you increment the count(total+=!used[str[i]-‘a’]) only if you haven’t already marked the character as visited. If you incremented it, you mark it as such in the next line (used[str[i]-‘a’]=1) so that you wont count it again. The notation … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[324,3788,362],"class_list":["post-14435","post","type-post","status-publish","format-standard","hentry","category-solved","tag-c","tag-pangram","tag-string"],"yoast_head":"\n[Solved] working of these two lines of code in the program [closed] - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-working-of-these-two-lines-of-code-in-the-program-closed\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] working of these two lines of code in the program [closed] - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] The total variable will contain the number of unique characters in the array str. This happens because you increment the count(total+=!used[str[i]-'a']) only if you haven’t already marked the character as visited. If you incremented it, you mark it as such in the next line (used[str[i]-'a']=1) so that you wont count it again. The notation ... 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