{"id":19336,"date":"2022-11-06T08:00:58","date_gmt":"2022-11-06T02:30:58","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-fixed-array-stringbuilder-string-which-is-best-way-to-create-a-string-if-84-strings-to-be-appended\/"},"modified":"2022-11-06T08:00:58","modified_gmt":"2022-11-06T02:30:58","slug":"solved-fixed-array-stringbuilder-string-which-is-best-way-to-create-a-string-if-84-strings-to-be-appended","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-fixed-array-stringbuilder-string-which-is-best-way-to-create-a-string-if-84-strings-to-be-appended\/","title":{"rendered":"[Solved] Fixed Array?\/ StringBuilder?\/ String? which is best way to create a string, if 84 strings to be appended"},"content":{"rendered":"

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If by “best” you mean “most memory and\/or runtime efficient” then you’re probably best off with a StringBuilder<\/code> you pre-allocate. (Having looked at the implementation of String.join<\/code> in the JDK, it uses StringJoiner<\/code>, which uses a StringBuilder<\/code> with the default initial capacity [16 chars] with no attempt to avoid reallocation and copying.)<\/p>\n

You’d sum up the lengths of your 84 strings, add in the number of commas, create a StringBuilder<\/code> with that length, add them all, and call toString<\/code> on it. E.g.:<\/p>\n

int length = 0;\nfor (int i = 0; i < strings.length; ++i) {\n    length += strings[i].length();\n}\nlength += strings.length - 1; \/\/ For the commas\nStringBuilder sb = new StringBuilder(length);\nsb.append(strings[0]);\nfor (int i = 1; i < strings.length; ++i) {\n    sb.append(',');\n    sb.append(strings[i]);\n}\nString result = sb.toString();\n<\/code><\/pre>\n<\/p><\/div>\n
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            2<\/span> <\/p><\/div>\n<\/div>\n
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solved Fixed Array?\/ StringBuilder?\/ String? which is best way to create a string, if 84 strings to be appended <\/p>\n","protected":false},"excerpt":{"rendered":"
[ad_1] If by “best” you mean “most memory and\/or runtime efficient” then you’re probably best off with a StringBuilder you pre-allocate. (Having looked at the implementation of String.join in the JDK, it uses StringJoiner, which uses a StringBuilder with the default initial capacity [16 chars] with no attempt to avoid reallocation and copying.) You’d sum … 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":[361,323,362,1428],"class_list":["post-19336","post","type-post","status-publish","format-standard","hentry","category-solved","tag-arrays","tag-java","tag-string","tag-stringbuilder"],"yoast_head":"\n[Solved] Fixed Array?\/ StringBuilder?\/ String? which is best way to create a string, if 84 strings to be appended - 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-fixed-array-stringbuilder-string-which-is-best-way-to-create-a-string-if-84-strings-to-be-appended\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] Fixed Array?\/ StringBuilder?\/ String? which is best way to create a string, if 84 strings to be appended - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] If by “best” you mean “most memory and\/or runtime efficient” then you’re probably best off with a StringBuilder you pre-allocate. 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