{"id":1728,"date":"2023-05-12T03:58:32","date_gmt":"2023-05-12T03:58:32","guid":{"rendered":"https:\/\/www.liutianfeng.com\/?p=1728"},"modified":"2023-05-12T10:03:27","modified_gmt":"2023-05-12T10:03:27","slug":"%e5%88%87%e7%89%87-slice","status":"publish","type":"post","link":"https:\/\/www.liutianfeng.com\/?p=1728","title":{"rendered":"\u5207\u7247 – Slice"},"content":{"rendered":"

1\u3001\u5b9a\u4e49<\/h2>\n

\u5207\u7247\u662f\u957f\u5ea6\u53ef\u53d8\u7684\u6570\u7ec4\uff0c\u7531\u4e09\u90e8\u5206\u7ec4\u6210\uff1a
\n\u6307\u9488\uff1a\u6307\u5411\u5207\u7247\u7b2c\u4e00\u4e2a\u5143\u7d20\u6307\u5411\u7684\u6570\u7ec4\u5143\u7d20\u7684\u5730\u5740
\n\u957f\u5ea6\uff1a\u5207\u7247\u5143\u7d20\u7684\u6570\u91cf
\n\u5bb9\u91cf\uff1a\u5207\u7247\u5f00\u59cb\u5230\u7ed3\u675f\u4f4d\u7f6e\u5143\u7d20\u7684\u6570\u91cf<\/p>\n

\u5207\u7247\u7684\u58f0\u540d\uff1a<\/strong>\u9700\u8981\u6307\u5b9a\u5143\u7d20\u7684\u7c7b\u578b\uff0c\u4e0d\u9700\u8981\u6307\u5b9a\u5143\u7d20\u7684\u6570\u91cf\uff08\u957f\u5ea6\uff09\uff0c\u521d\u59cb\u503c\u4e3anil\u3002<\/p>\n

var s1 []int\nfmt.Printf(\"Type: %T\\n\", s1) \/\/ Type: []int\nfmt.Println(s1 == nil)  \/\/ true<\/code><\/pre>\n
\u5207\u7247\u8d4b\u503c\uff1a<\/strong><\/p>\n
s1 = []int{1, 2, 3, 4} \/\/ [1 2 3 4]\ns1[0] = 1000  \/\/ [1000 2 3 4]<\/code><\/pre>\n
\u957f\u5ea6\u3001\u5bb9\u91cf\uff1a<\/strong><\/p>\n
fmt.Println(len(s1), cap(s1))  \/\/ 4 4\ns1 := make([]int, 3, 5) \/\/ meke\u7684\u65f6\u5019\u6307\u5b9alen, cap, \u53ef\u4ee5\u4e0d\u76f8\u540c, capacity\u3010\u5bb9\u91cf\u3011\u4e0d\u80fd\u8d85\u8fc7\u6570\u7ec4\u7684\u957f\u5ea6\nfmt.Println(s1, len(s1), cap(s1)) \/\/ [0 0 0] 3 5<\/code><\/pre>\n
append:<\/strong><\/p>\n
s1 = append(s1, 2)\nfmt.Println(s1, len(s1), cap(s1)) \/\/ [0 0 0 2] 4 5, \u957f\u5ea6\u589e\u52a0, cap\u4e0d\u53d8\ns2 := []int{3, 4}\n1 = append(s1, 1, 2, 3)\nmt.Println(s1, len(s1), cap(s1)) \/\/ [0 0 0 1 2 3] 6 10, \u5bb9\u91cf\u81ea\u52a8\u6269\u5c55, \u4e3a\u4e86\u63d0\u524d\u7533\u8bf7\u5185\u5b58\ns1 := []int{1, 2}\ns2 := []int{2, 3}\ns1 = append(s1, s2...) \/\/ s2...\u662f\u5bf9\u5207\u7247\u7684\u89e3\u5305\nfmt.Println(s1) \/\/ [1 2 2 3] <\/code><\/pre>\n
\u4fee\u6539\uff1a<\/strong><\/p>\n
s2 := s1[1:3]\nfmt.Println(s2, reflect.TypeOf(s2), len(s2), cap(s2))  \/\/ [0 0] []int 2 4, \u5b50\u5207\u7247\ns2[0] = 200\nfmt.Println(s1, s2) \/\/ \u516c\u7528\u90e8\u5206\u4fee\u6539\u4e86\u90fd\u4f1a\u4fee\u6539\uff1a[0 200 0] [200 0]\ns2 = append(s2, 3)\nfmt.Println(s1, s2) \/\/ \u79c1\u6709\u90e8\u5206\uff0c\u53ea\u5b50\u5207\u7247\u6709\u5f71\u54cd\uff1a[0 200 0] [200 0 3]<\/code><\/pre>\n
copy:<\/strong><\/p>\n
s1 := []int{1, 2, 3}\ns2 := []int{4, 5}\ncopy(s2, s1) \/\/ s2 < s1, s1\u7684\u5143\u7d20copy\u5230s2, \u5411\u5de6\nfmt.Println(s2, len(s2), cap(s2)) \/\/ [1 2] 2 2, \u4e0d\u4f1a\u4fee\u6539s2\u4e4b\u524d\u7684\u5c5e\u6027[\u957f\u5ea6|\u5bb9\u91cf]\ncopy(s1, s2) \/\/ s1 < s2, s2\u7684\u5143\u7d20copy\u5230s1, \u5411\u5de6\nfmt.Println(s1, len(s1), cap(s1)) \/\/ [4 5 3] 3 3<\/code><\/pre>\n
\u5220\u9664:<\/strong> \u7528\u5b50\u5207\u7247\u5b9e\u73b0\u5220\u9664\uff0c\u7528copy\u5b9e\u73b0\u5bf9slice\u7684\u5220\u9664<\/p>\n
s1 := []int{1, 2, 3, 4, 5}\ncopy(s1[2:], s1[3:]) \/\/ \u628as1\u7684\u7d22\u5f15\u4ece3\u5f00\u59cb\u7684\u5143\u7d20\uff0c\u8986\u76d6\u7d22\u5f15\u4ece2\u5f00\u59cb\u7684\u5143\u7d20\nfmt.Println(s1[:len(s1)-1]) \/\/ [1 2 4 5], \u5220\u9664\u6700\u540e\u4e00\u4e2a\u5143\u7d20\nfmt.Println(append(s1[:2], s1[3:]...)) \/\/ \u7b49\u4ef7\u4e8eappend\u7684\u64cd\u4f5c, s1[3:]...\u4f1a\u8f6c\u6362\u5207\u7247\u4e3a\u5143\u7d20<\/code><\/pre>\n
\u5806\u6808\uff1a<\/strong>\u5148\u8fdb\u540e\u51fa\uff0c\u6dfb\u52a0\u5728\u961f\u5c3e\uff0c\u79fb\u9664\u4e5f\u5728\u961f\u5c3e
\n\u961f\u5217\uff1a<\/strong>\u5148\u8fdb\u5148\u51fa\uff0c\u6dfb\u52a0\u5728\u961f\u5c3e\uff0c\u79fb\u9664\u4e5f\u5728\u961f\u9996<\/p>\n
\/\/ \u961f\u5217\nqueue := []int{}\nqueue = append(queue, 1)\nqueue = append(queue, 2)\nqueue = append(queue, 3)\nfmt.Println(queue[0])\nfmt.Println(queue[1:]) \/\/ [2 3]\n\n\/\/ \u5806\u6808\nstack := []int{}\nfor i := 1; i <= 3; i++ {\n\tstack = append(stack, i)\n}\nfmt.Println(stack[len(stack)-1])\nfmt.Println(stack[:len(stack)-1]) \/\/ [1 2]<\/code><\/pre>\n
\u591a\u7ef4\u5207\u7247\uff1a<\/strong><\/p>\n
multi_s1 := make([][]int, 0) \/\/ \u957f\u5ea6\u4e3a0\u7684\u7a7a\u5207\u7247\nmulti_s1 = append(multi_s1, []int{1, 2, 3})\nmulti_s1 = append(multi_s1, []int{4, 5, 6})\nfmt.Printf(\"%T %v\\n\", multi_s1, multi_s1) \/\/ [][]int [[1 2 3] [4 5 6]]\nfmt.Println(multi_s1[0][1]) \/\/ 2, \u591a\u7ef4\u5207\u7247\u7684\u5143\u7d20\u8bbf\u95ee<\/code><\/pre>\n
\u6570\u7ec4\u662f\u503c\u7c7b\u578b\uff0carray1 = array2\uff0c\u4f1a\u8fdb\u884c\u503c\u4f20\u9012\uff0carray2\u4fee\u6539\u4e0d\u5f71\u54cdarray2
\n\u5207\u7247\u662f\u5f15\u7528\u7c7b\u578b\uff0cslice1 = slice2\uff0cslice2\u4fee\u6539\uff0cslice1\u4e5f\u4f1a\u88ab\u4fee\u6539<\/p>\n
\/\/ Slice\nslice01 := []int{1, 2, 3}\nslice02 := slice01\nslice02[0] = 10\nfmt.Println(slice01, slice02) \/\/ [10 2 3] [10 2 3]\n\/\/ Array\narray01 := [3]int{1, 2, 3}\narray02 := array01\narray02[0] = 10\nfmt.Println(array01, array02) \/\/ [1 2 3] [10 2 3]<\/code><\/pre>\n
\u6392\u5e8f\uff1a<\/strong><\/p>\n
\/\/ \u6570\u5b57\nslice01 := []int{1, 3, 2, 5, 4}\nfmt.Println(slice01) \/\/ [1 3 2 5 4], \u6392\u5e8f\u524d\nsort.Ints(slice01)\nfmt.Println(slice01) \/\/ [1 2 3 4 5], \u6392\u5e8f\u540e\n\/\/ String\nslice01 := []string{\"hello\", \"123\", \"Liemer\", \"lius\", \"gogogo\"}\nfmt.Println(slice01) \/\/ [hello 123 Liemer lius gogogo], \u6392\u5e8f\u524d\nsort.Strings(slice01)\nfmt.Println(slice01) \/\/ [123 Liemer gogogo hello lius], \u6392\u5e8f\u540e\n\/\/ Float\nslice01 := []float64{1.1, -2.3, 55.2, 3.2, 128.3}\nfmt.Println(slice01) \/\/ [1.1 -2.3 55.2 3.2 128.3]\nsort.Float64s(slice01)\nfmt.Println(slice01) \/\/ [-2.3 1.1 3.2 55.2 128.3]<\/code><\/pre>\n
\u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff1aliutianfeng.com<\/a> » \u5207\u7247 – Slice<\/a><\/p>","protected":false},"excerpt":{"rendered":"
1\u3001\u5b9a\u4e49 \u5207\u7247\u662f\u957f\u5ea6\u53ef\u53d8\u7684\u6570\u7ec4\uff0c\u7531\u4e09\u90e8\u5206\u7ec4\u6210\uff1a \u6307\u9488\uff1a\u6307\u5411\u5207\u7247\u7b2c\u4e00\u4e2a\u5143\u7d20\u6307\u5411\u7684\u6570\u7ec4\u5143\u7d20\u7684\u5730\u5740 \u957f\u5ea6\uff1a\u5207\u7247\u5143\u7d20\u7684 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[70],"tags":[],"_links":{"self":[{"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=\/wp\/v2\/posts\/1728"}],"collection":[{"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1728"}],"version-history":[{"count":2,"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=\/wp\/v2\/posts\/1728\/revisions"}],"predecessor-version":[{"id":1734,"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=\/wp\/v2\/posts\/1728\/revisions\/1734"}],"wp:attachment":[{"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1728"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1728"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.liutianfeng.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1728"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}