{"id":3505,"date":"2025-04-13T13:26:34","date_gmt":"2025-04-13T05:26:34","guid":{"rendered":"https:\/\/www.laixuexila.com\/?p=3505"},"modified":"2025-04-13T13:26:34","modified_gmt":"2025-04-13T05:26:34","slug":"c-%e6%95%b0%e7%bb%84%ef%bc%88array%ef%bc%89","status":"publish","type":"post","link":"https:\/\/www.laixuexila.com\/index.php\/2025\/04\/13\/c-%e6%95%b0%e7%bb%84%ef%bc%88array%ef%bc%89\/","title":{"rendered":"C# \u6570\u7ec4\uff08Array\uff09"},"content":{"rendered":"\n

\u4e0b\u9762\u662f\u4ece\u4e13\u4e1a\u5f00\u53d1\u89d2\u5ea6\u51fa\u53d1\u3001\u57fa\u4e8e Microsoft \u5b98\u65b9\u6587\u6863<\/a> \u7684 C# \u6570\u7ec4\uff08Array\uff09<\/strong> \u5168\u9762\u8be6\u89e3\uff0c\u6db5\u76d6\u6982\u5ff5\u3001\u58f0\u660e\u3001\u521d\u59cb\u5316\u3001\u4f7f\u7528\u65b9\u5f0f\u3001\u591a\u7ef4\u4e0e\u4ea4\u9519\u6570\u7ec4\u3001\u5e38\u7528\u65b9\u6cd5\u4e0e\u6280\u5de7\uff0c\u5e76\u9644\u6709\u591a\u79cd\u9014\u5f84\u793a\u4f8b\u3002<\/p>\n\n\n\n

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\u4e00\u3001\u4ec0\u4e48\u662f\u6570\u7ec4\uff1f<\/h2>\n\n\n\n
\n

\u6570\u7ec4\uff08Array\uff09<\/strong> \u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u7528\u4e8e\u5b58\u50a8 \u56fa\u5b9a\u5927\u5c0f\u3001\u540c\u4e00\u7c7b\u578b<\/strong> \u7684\u5143\u7d20\u96c6\u5408\u3002\u5143\u7d20\u5728\u5185\u5b58\u4e2d\u662f\u8fde\u7eed\u6392\u5217\u7684\uff0c\u53ef\u901a\u8fc7\u7d22\u5f15\u8bbf\u95ee\u3002<\/p>\n<\/blockquote>\n\n\n\n

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\u4e8c\u3001\u6570\u7ec4\u7684\u58f0\u660e\u65b9\u5f0f<\/h2>\n\n\n\n

1. \u58f0\u660e\u4f46\u4e0d\u521d\u59cb\u5316<\/h3>\n\n\n\n
int[] numbers;    \/\/ \u58f0\u660e\u4e00\u4e2a\u6574\u578b\u6570\u7ec4\u53d8\u91cf<\/code><\/pre>\n\n\n\n
2. \u58f0\u660e\u5e76\u6307\u5b9a\u5927\u5c0f<\/h3>\n\n\n\n
int[] numbers = new int[5]; \/\/ \u58f0\u660e\u5e76\u5206\u914d5\u4e2a\u6574\u6570\u5143\u7d20<\/code><\/pre>\n\n\n\n
3. \u58f0\u660e\u5e76\u521d\u59cb\u5316<\/h3>\n\n\n\n
int[] numbers = new int[] { 1, 2, 3, 4, 5 };<\/code><\/pre>\n\n\n\n
4. \u7c7b\u578b\u63a8\u65ad\uff08\u63a8\u8350\uff09<\/h3>\n\n\n\n
var numbers = new[] { 1, 2, 3, 4 }; \/\/ \u81ea\u52a8\u63a8\u65ad\u4e3a int[]<\/code><\/pre>\n\n\n\n
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\u4e09\u3001\u8bbf\u95ee\u4e0e\u4fee\u6539\u6570\u7ec4\u5143\u7d20<\/h2>\n\n\n\n
int[] nums = { 10, 20, 30 };\nConsole.WriteLine(nums[1]); \/\/ \u8f93\u51fa 20\n\nnums[2] = 100;\nConsole.WriteLine(nums[2]); \/\/ \u8f93\u51fa 100<\/code><\/pre>\n\n\n\n
\n
\u6ce8\u610f\uff1a\u7d22\u5f15\u4ece 0<\/code> \u5f00\u59cb\uff0c\u8d85\u51fa\u8303\u56f4\u8bbf\u95ee\u5c06\u629b\u51fa IndexOutOfRangeException<\/code><\/p>\n<\/blockquote>\n\n\n\n
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\u56db\u3001\u6570\u7ec4\u7684\u904d\u5386\u65b9\u5f0f<\/h2>\n\n\n\n
1. for<\/code> \u5faa\u73af<\/h3>\n\n\n\n
for (int i = 0; i < nums.Length; i++)\n{\n    Console.WriteLine(nums[i]);\n}<\/code><\/pre>\n\n\n\n
2. foreach<\/code> \u5faa\u73af<\/h3>\n\n\n\n
foreach (int n in nums)\n{\n    Console.WriteLine(n);\n}<\/code><\/pre>\n\n\n\n
\n\n\n\n
\u4e94\u3001\u591a\u7ef4\u6570\u7ec4\uff08Multi-dimensional Arrays\uff09<\/h2>\n\n\n\n
1. \u4e8c\u7ef4\u6570\u7ec4<\/h3>\n\n\n\n
int[,] matrix = new int[2, 3]; \/\/ 2\u884c3\u5217\n\nint[,] matrix2 = {\n    { 1, 2, 3 },\n    { 4, 5, 6 }\n};\n\nConsole.WriteLine(matrix2[1, 2]); \/\/ \u8f93\u51fa 6<\/code><\/pre>\n\n\n\n
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\u516d\u3001\u4ea4\u9519\u6570\u7ec4\uff08Jagged Arrays\uff09= \u6570\u7ec4\u7684\u6570\u7ec4<\/h2>\n\n\n\n
int[][] jagged = new int[2][];\njagged[0] = new int[] { 1, 2 };\njagged[1] = new int[] { 3, 4, 5 };\n\nConsole.WriteLine(jagged[1][2]); \/\/ \u8f93\u51fa 5<\/code><\/pre>\n\n\n\n
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\u4e03\u3001\u5e38\u7528\u5c5e\u6027\u548c\u65b9\u6cd5\uff08Array \u7c7b\uff09<\/h2>\n\n\n\n
\u65b9\u6cd5\/\u5c5e\u6027<\/th>\u63cf\u8ff0<\/th><\/tr><\/thead>
Length<\/code><\/td>\u83b7\u53d6\u6570\u7ec4\u7684\u5143\u7d20\u603b\u6570<\/td><\/tr>
Rank<\/code><\/td>\u83b7\u53d6\u7ef4\u6570\uff08\u51e0\u7ef4\u6570\u7ec4\uff09<\/td><\/tr>
Array.Sort()<\/code><\/td>\u5bf9\u6570\u7ec4\u6392\u5e8f<\/td><\/tr>
Array.Reverse()<\/code><\/td>\u53cd\u8f6c\u6570\u7ec4\u4e2d\u7684\u5143\u7d20<\/td><\/tr>
Array.IndexOf()<\/code><\/td>\u67e5\u627e\u5143\u7d20\u7d22\u5f15<\/td><\/tr>
Array.Clear()<\/code><\/td>\u6e05\u7a7a\u6570\u7ec4\u5143\u7d20\uff08\u8bbe\u7f6e\u4e3a\u9ed8\u8ba4\u503c\uff09<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\u793a\u4f8b\uff1a<\/h3>\n\n\n\n
int[] arr = { 3, 1, 4 };\nArray.Sort(arr);         \/\/ arr: [1, 3, 4]\nArray.Reverse(arr);      \/\/ arr: [4, 3, 1]\nConsole.WriteLine(arr.Length); \/\/ 3<\/code><\/pre>\n\n\n\n
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\u516b\u3001\u6570\u7ec4\u4e0e\u5185\u5b58\u7ba1\u7406<\/h2>\n\n\n\n
\u6570\u7ec4\u662f \u5f15\u7528\u7c7b\u578b<\/strong>\uff0c\u5373\u4f7f\u662f int[]<\/code> \u8fd9\u6837\u7684\u6570\u7ec4\uff0c\u5176\u5bf9\u8c61\u662f\u5206\u914d\u5728 \u6258\u7ba1\u5806<\/strong> \u4e0a\u3002<\/p>\n\n\n\n
\n
\u26a0\ufe0f \u6570\u7ec4\u5927\u5c0f\u4e00\u65e6\u58f0\u660e\uff0c\u4e0d\u53ef\u6539\u53d8<\/strong>\u3002\u8981\u5b9e\u73b0\u52a8\u6001\u6269\u5bb9\uff0c\u63a8\u8350\u4f7f\u7528 List<T><\/code>\u3002<\/p>\n<\/blockquote>\n\n\n\n
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\u4e5d\u3001\u6570\u7ec4\u4e0e List<T><\/code> \u6bd4\u8f83<\/h2>\n\n\n\n
\u7279\u6027<\/th>\u6570\u7ec4 T[]<\/code><\/th>List\uff08\u6cdb\u578b\u5217\u8868\uff09<\/th><\/tr><\/thead>
\u5927\u5c0f\u53ef\u53d8<\/td>\u274c \u5426<\/td>\u2705 \u662f<\/td><\/tr>
\u7c7b\u578b\u5b89\u5168<\/td>\u2705 \u662f<\/td>\u2705 \u662f<\/td><\/tr>
\u5185\u5b58\u6548\u7387<\/td>\u2705 \u9ad8<\/td>\u26a0\ufe0f \u7565\u4f4e\u4e8e\u6570\u7ec4<\/td><\/tr>
\u7075\u6d3b\u64cd\u4f5c<\/td>\u274c \u5c11\u65b9\u6cd5\u652f\u6301<\/td>\u2705 Add\/Remove\/Sort \u7b49<\/td><\/tr>
\u63a8\u8350\u4f7f\u7528<\/td>\u9ad8\u6027\u80fd\/\u5b9a\u957f\u6570\u636e<\/td>\u7075\u6d3b\/\u6570\u636e\u4e0d\u56fa\u5b9a\u573a\u666f<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
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\u5341\u3001\u5b9e\u6218\u793a\u4f8b\uff1a\u7edf\u8ba1\u6570\u5b57\u51fa\u73b0\u9891\u7387<\/h2>\n\n\n\n
int[] scores = { 100, 90, 80, 100, 90 };\nDictionary<int, int> freq = new Dictionary<int, int>();\n\nforeach (int score in scores)\n{\n    if (!freq.ContainsKey(score))\n        freq[score] = 0;\n    freq[score]++;\n}\n\nforeach (var pair in freq)\n{\n    Console.WriteLine($\"Score {pair.Key}: {pair.Value} times\");\n}<\/code><\/pre>\n\n\n\n
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\u5341\u4e00\u3001\u5b98\u65b9\u6587\u6863\u94fe\u63a5<\/h2>\n\n\n\n