ArrayBuffer<\/strong><\/h3> \n <\/p> \n
\u5728<\/span>Scala\u4e2d\uff0c\u5982\u679c\u9700\u8981\u7c7b\u4f3c\u4e8e<\/span>Java<\/span>\u4e2d\u7684<\/span>ArrayList<\/span>\u8fd9\u79cd\u957f\u5ea6\u53ef\u53d8\u7684\u96c6\u5408\u7c7b\uff0c\u5219\u53ef\u4ee5\u4f7f\u7528<\/span>ArrayBuffer<\/span>\u3002<\/span><\/p> \n <\/p> \n
\/\/ \u5982\u679c\u4e0d\u60f3\u6bcf\u6b21\u90fd\u4f7f\u7528\u5168\u9650\u5b9a\u540d\uff0c\u5219\u53ef\u4ee5\u9884\u5148\u5bfc\u5165<\/span>ArrayBuffer<\/span>\u7c7b<\/span><\/p> \n import scala.collection.mutable.ArrayBuffer<\/p> \n
\/\/ \u4f7f\u7528<\/span>ArrayBuffer()<\/span>\u7684\u65b9\u5f0f\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u7a7a\u7684<\/span>ArrayBuffer<\/span><\/p> \n val b = ArrayBuffer[Int]()<\/p> \n
\/\/ \u4f7f\u7528<\/span>+=<\/span>\u64cd\u4f5c\u7b26\uff0c\u53ef\u4ee5\u6dfb\u52a0\u4e00\u4e2a\u5143\u7d20\uff0c\u6216\u8005\u591a\u4e2a\u5143\u7d20<\/span><\/p> \n \/\/ \u8fd9\u4e2a\u8bed\u6cd5\u5fc5\u987b\u8981\u8c28\u8bb0\u5728\u5fc3\uff01\u56e0\u4e3a<\/span>spark<\/span>\u6e90\u7801\u91cc\u5927\u91cf\u4f7f\u7528\u4e86\u8fd9\u79cd\u96c6\u5408\u64cd\u4f5c\u8bed\u6cd5\uff01<\/span><\/p> \n b += 1<\/p> \n
b += (2, 3, 4, 5)<\/p> \n
\/\/ \u4f7f\u7528<\/span>++=<\/span>\u64cd\u4f5c\u7b26\uff0c\u53ef\u4ee5\u6dfb\u52a0\u5176\u4ed6\u96c6\u5408\u4e2d\u7684\u6240\u6709\u5143\u7d20<\/span><\/p> \n b ++= Array(6, 7, 8, 9, 10)<\/p> \n
\/\/ \u4f7f\u7528<\/span>trimEnd()<\/span>\u51fd\u6570\uff0c\u53ef\u4ee5\u4ece\u5c3e\u90e8\u622a\u65ad\u6307\u5b9a\u4e2a\u6570\u7684\u5143\u7d20<\/span><\/p> \n b.trimEnd(5)<\/p> \n
<\/p> \n
\/\/ \u4f7f\u7528<\/span>insert()<\/span>\u51fd\u6570\u53ef\u4ee5\u5728\u6307\u5b9a\u4f4d\u7f6e\u63d2\u5165\u5143\u7d20<\/span><\/p> \n \/\/ \u4f46\u662f\u8fd9\u79cd\u64cd\u4f5c\u6548\u7387\u5f88\u4f4e\uff0c\u56e0\u4e3a\u9700\u8981\u79fb\u52a8\u6307\u5b9a\u4f4d\u7f6e\u540e\u7684\u6240\u6709\u5143\u7d20<\/span><\/p> \n b.insert(5, 6)<\/p> \n
b.insert(6, 7, 8, 9, 10)<\/p> \n
\/\/ \u4f7f\u7528<\/span>remove()<\/span>\u51fd\u6570\u53ef\u4ee5\u79fb\u9664\u6307\u5b9a\u4f4d\u7f6e\u7684\u5143\u7d20<\/span><\/p> \n b.remove(1)<\/p> \n
b.remove(1, 3)<\/p> \n
\/\/ Array\u4e0e<\/span>ArrayBuffer<\/span>\u53ef\u4ee5\u4e92\u76f8\u8fdb\u884c\u8f6c\u6362<\/span><\/p> \n b.toArray<\/p> \n
a.toBuffer<\/p> \n
<\/p> \n
<\/p> \n
\u904d\u5386<\/span>Array\u548c<\/span>ArrayBuffer<\/span><\/strong><\/h3> \n \/\/ \u4f7f\u7528<\/span>for<\/span>\u5faa\u73af\u548c<\/span>until<\/span>\u904d\u5386<\/span>Array \/ ArrayBuffer<\/span><\/p> \n \/\/ \u4f7f<\/span>until<\/span>\u662f<\/span>RichInt<\/span>\u63d0\u4f9b\u7684\u51fd\u6570<\/span><\/p> \n for (i <- 0 until b.length)<\/p> \n
println(b(i))<\/p> \n
\/\/ \u8df3\u8dc3\u904d\u5386<\/span>Array \/ ArrayBuffer<\/span><\/p> \n for(i <- 0 until (b.length, 2))<\/p> \n
println(b(i))<\/p> \n
\/\/ \u4ece\u5c3e\u90e8\u904d\u5386<\/span>Array \/ ArrayBuffer<\/span><\/p> \n for(i <- (0 until b.length).reverse)<\/p> \n
println(b(i))<\/p> \n
\/\/ \u4f7f\u7528\u201c\u589e\u5f3a<\/span>for<\/span>\u5faa\u73af\u201d\u904d\u5386<\/span>Array \/ ArrayBuffer<\/span><\/p> \n for (e <- b)<\/p> \n
println(e)<\/p> \n
<\/p> \n
<\/p> \n
\u6570\u7ec4\u5e38\u89c1\u64cd\u4f5c<\/strong><\/h3> \n <\/p> \n
\/\/ \u6570\u7ec4\u5143\u7d20\u6c42\u548c<\/span><\/p> \n val a = Array(1, 2, 3, 4, 5)<\/p> \n
val sum = a.sum<\/p> \n
\/\/ \u83b7\u53d6\u6570\u7ec4\u6700\u5927\u503c<\/span><\/p> \n val max = a.max<\/p> \n
\/\/ \u5bf9\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f<\/span><\/p> \n scala.util.Sorting.quickSort(a)<\/p> \n
\/\/ \u83b7\u53d6\u6570\u7ec4\u4e2d\u6240\u6709\u5143\u7d20\u5185\u5bb9<\/span><\/p> \n a.mkString<\/p> \n
a.mkString(", ")<\/p> \n
a.mkString("<", ",", ">")<\/p> \n
\/\/ toString\u51fd\u6570<\/span><\/p> \n a.toString<\/p> \n
b.toString<\/p> \n
<\/p> \n<\/div>","orderid":"0","title":"Scala \u6570\u7ec4\u64cd\u4f5c\u4e4bArray\u3001ArrayBuffer\u4ee5\u53ca\u904d\u5386\u6570\u7ec4","smalltitle":"","mid":"0","fname":"Scala","special_id":"0","bak_id":"0","info":"0","hits":"121","pages":"1","comments":"0","posttime":"2019-09-03 03:46:50","list":"1567453610","username":"admin","author":"","copyfrom":"","copyfromurl":"","titlecolor":"","fonttype":"0","titleicon":"0","picurl":"https:\/\/www.cppentry.com\/upload_files\/","ispic":"0","yz":"1","yzer":"","yztime":"0","levels":"0","levelstime":"0","keywords":"Scala<\/A> \u64cd\u4f5c<\/A> Array<\/A> ArrayBuffer<\/A> \u4ee5\u53ca<\/A> \u5386\u6570<\/A>","jumpurl":"","iframeurl":"","style":"","template":"a:3:{s:4:\"head\";s:0:\"\";s:4:\"foot\";s:0:\"\";s:8:\"bencandy\";s:0:\"\";}","target":"0","ip":"120.229.33.54","lastfid":"0","money":"0","buyuser":"","passwd":"","allowdown":"","allowview":"","editer":"","edittime":"0","begintime":"0","endtime":"0","description":"Scala \u6570\u7ec4\u64cd\u4f5c\u4e4bArray\u3001ArrayBuffer\u4ee5\u53ca\u904d\u5386\u6570\u7ec4","lastview":"1708276222","digg_num":"0","digg_time":"0","forbidcomment":"0","ifvote":"0","heart":"","htmlname":"","city_id":"0"},"page":"1"}
<\/p> \n
\/\/ \u5982\u679c\u4e0d\u60f3\u6bcf\u6b21\u90fd\u4f7f\u7528\u5168\u9650\u5b9a\u540d\uff0c\u5219\u53ef\u4ee5\u9884\u5148\u5bfc\u5165<\/span>ArrayBuffer<\/span>\u7c7b<\/span><\/p> \n import scala.collection.mutable.ArrayBuffer<\/p> \n \/\/ \u4f7f\u7528<\/span>ArrayBuffer()<\/span>\u7684\u65b9\u5f0f\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u7a7a\u7684<\/span>ArrayBuffer<\/span><\/p> \n val b = ArrayBuffer[Int]()<\/p> \n \/\/ \u4f7f\u7528<\/span>+=<\/span>\u64cd\u4f5c\u7b26\uff0c\u53ef\u4ee5\u6dfb\u52a0\u4e00\u4e2a\u5143\u7d20\uff0c\u6216\u8005\u591a\u4e2a\u5143\u7d20<\/span><\/p> \n \/\/ \u8fd9\u4e2a\u8bed\u6cd5\u5fc5\u987b\u8981\u8c28\u8bb0\u5728\u5fc3\uff01\u56e0\u4e3a<\/span>spark<\/span>\u6e90\u7801\u91cc\u5927\u91cf\u4f7f\u7528\u4e86\u8fd9\u79cd\u96c6\u5408\u64cd\u4f5c\u8bed\u6cd5\uff01<\/span><\/p> \n b += 1<\/p> \n b += (2, 3, 4, 5)<\/p> \n \/\/ \u4f7f\u7528<\/span>++=<\/span>\u64cd\u4f5c\u7b26\uff0c\u53ef\u4ee5\u6dfb\u52a0\u5176\u4ed6\u96c6\u5408\u4e2d\u7684\u6240\u6709\u5143\u7d20<\/span><\/p> \n b ++= Array(6, 7, 8, 9, 10)<\/p> \n \/\/ \u4f7f\u7528<\/span>trimEnd()<\/span>\u51fd\u6570\uff0c\u53ef\u4ee5\u4ece\u5c3e\u90e8\u622a\u65ad\u6307\u5b9a\u4e2a\u6570\u7684\u5143\u7d20<\/span><\/p> \n b.trimEnd(5)<\/p> \n <\/p> \n \/\/ \u4f7f\u7528<\/span>insert()<\/span>\u51fd\u6570\u53ef\u4ee5\u5728\u6307\u5b9a\u4f4d\u7f6e\u63d2\u5165\u5143\u7d20<\/span><\/p> \n \/\/ \u4f46\u662f\u8fd9\u79cd\u64cd\u4f5c\u6548\u7387\u5f88\u4f4e\uff0c\u56e0\u4e3a\u9700\u8981\u79fb\u52a8\u6307\u5b9a\u4f4d\u7f6e\u540e\u7684\u6240\u6709\u5143\u7d20<\/span><\/p> \n b.insert(5, 6)<\/p> \n b.insert(6, 7, 8, 9, 10)<\/p> \n \/\/ \u4f7f\u7528<\/span>remove()<\/span>\u51fd\u6570\u53ef\u4ee5\u79fb\u9664\u6307\u5b9a\u4f4d\u7f6e\u7684\u5143\u7d20<\/span><\/p> \n b.remove(1)<\/p> \n b.remove(1, 3)<\/p> \n \/\/ Array\u4e0e<\/span>ArrayBuffer<\/span>\u53ef\u4ee5\u4e92\u76f8\u8fdb\u884c\u8f6c\u6362<\/span><\/p> \n b.toArray<\/p> \n a.toBuffer<\/p> \n <\/p> \n <\/p> \n \/\/ \u4f7f\u7528<\/span>for<\/span>\u5faa\u73af\u548c<\/span>until<\/span>\u904d\u5386<\/span>Array \/ ArrayBuffer<\/span><\/p> \n \/\/ \u4f7f<\/span>until<\/span>\u662f<\/span>RichInt<\/span>\u63d0\u4f9b\u7684\u51fd\u6570<\/span><\/p> \n for (i <- 0 until b.length)<\/p> \n println(b(i))<\/p> \n \/\/ \u8df3\u8dc3\u904d\u5386<\/span>Array \/ ArrayBuffer<\/span><\/p> \n for(i <- 0 until (b.length, 2))<\/p> \n println(b(i))<\/p> \n \/\/ \u4ece\u5c3e\u90e8\u904d\u5386<\/span>Array \/ ArrayBuffer<\/span><\/p> \n for(i <- (0 until b.length).reverse)<\/p> \n println(b(i))<\/p> \n \/\/ \u4f7f\u7528\u201c\u589e\u5f3a<\/span>for<\/span>\u5faa\u73af\u201d\u904d\u5386<\/span>Array \/ ArrayBuffer<\/span><\/p> \n for (e <- b)<\/p> \n println(e)<\/p> \n <\/p> \n <\/p> \n <\/p> \n \/\/ \u6570\u7ec4\u5143\u7d20\u6c42\u548c<\/span><\/p> \n val a = Array(1, 2, 3, 4, 5)<\/p> \n val sum = a.sum<\/p> \n \/\/ \u83b7\u53d6\u6570\u7ec4\u6700\u5927\u503c<\/span><\/p> \n val max = a.max<\/p> \n \/\/ \u5bf9\u6570\u7ec4\u8fdb\u884c\u6392\u5e8f<\/span><\/p> \n scala.util.Sorting.quickSort(a)<\/p> \n \/\/ \u83b7\u53d6\u6570\u7ec4\u4e2d\u6240\u6709\u5143\u7d20\u5185\u5bb9<\/span><\/p> \n a.mkString<\/p> \n a.mkString(", ")<\/p> \n a.mkString("<", ",", ">")<\/p> \n \/\/ toString\u51fd\u6570<\/span><\/p> \n a.toString<\/p> \n b.toString<\/p> \n <\/p> \n<\/div>","orderid":"0","title":"Scala \u6570\u7ec4\u64cd\u4f5c\u4e4bArray\u3001ArrayBuffer\u4ee5\u53ca\u904d\u5386\u6570\u7ec4","smalltitle":"","mid":"0","fname":"Scala","special_id":"0","bak_id":"0","info":"0","hits":"121","pages":"1","comments":"0","posttime":"2019-09-03 03:46:50","list":"1567453610","username":"admin","author":"","copyfrom":"","copyfromurl":"","titlecolor":"","fonttype":"0","titleicon":"0","picurl":"https:\/\/www.cppentry.com\/upload_files\/","ispic":"0","yz":"1","yzer":"","yztime":"0","levels":"0","levelstime":"0","keywords":"Scala<\/A> \u64cd\u4f5c<\/A> Array<\/A> ArrayBuffer<\/A> \u4ee5\u53ca<\/A> \u5386\u6570<\/A>","jumpurl":"","iframeurl":"","style":"","template":"a:3:{s:4:\"head\";s:0:\"\";s:4:\"foot\";s:0:\"\";s:8:\"bencandy\";s:0:\"\";}","target":"0","ip":"120.229.33.54","lastfid":"0","money":"0","buyuser":"","passwd":"","allowdown":"","allowview":"","editer":"","edittime":"0","begintime":"0","endtime":"0","description":"Scala \u6570\u7ec4\u64cd\u4f5c\u4e4bArray\u3001ArrayBuffer\u4ee5\u53ca\u904d\u5386\u6570\u7ec4","lastview":"1708276222","digg_num":"0","digg_time":"0","forbidcomment":"0","ifvote":"0","heart":"","htmlname":"","city_id":"0"},"page":"1"}\u904d\u5386<\/span>Array\u548c<\/span>ArrayBuffer<\/span><\/strong><\/h3> \n
\u6570\u7ec4\u5e38\u89c1\u64cd\u4f5c<\/strong><\/h3> \n