{"record":{"id":"f0e5f7144e650d78","repo":"TheAlgorithms/C-Sharp","slug":"provided-number-is-too-big","errorCode":null,"errorMessage":"Provided number is too big","messagePattern":"Provided number is too big","errorType":"validation","errorClass":"ArgumentException","httpStatus":null,"severity":"error","filePath":"DataStructures/BitArray.cs","lineNumber":575,"sourceCode":"    ///     Compiles integer number into the inner data structure.\n    ///     Assumes: the number must have the same bit length.\n    /// </summary>\n    /// <param name=\"number\">A positive integer number.</param>\n    public void Compile(int number)\n    {\n        // precondition I\n        if (number <= 0)\n        {\n            throw new ArgumentException($\"{nameof(number)} must be positive\");\n        }\n\n        // converts to binary representation\n        var binaryNumber = Convert.ToString(number, 2);\n\n        // precondition II\n        if (binaryNumber.Length > field.Length)\n        {\n            throw new ArgumentException(\"Provided number is too big\");\n        }\n\n        // for appropriate scaling\n        if (binaryNumber.Length < field.Length)\n        {\n            var difference = field.Length - binaryNumber.Length;\n            binaryNumber = new string('0', difference) + binaryNumber;\n        }\n\n        // actual compile procedure.\n        for (var i = 0; i < binaryNumber.Length; i++)\n        {\n            field[i] = binaryNumber[i] == '1';\n        }\n    }\n\n    /// <summary>\n    ///     Compiles integer number into the inner data structure.","sourceCodeStart":557,"sourceCodeEnd":593,"githubUrl":"https://github.com/TheAlgorithms/C-Sharp/blob/96e2905cab7bc6b33ac0a34ee5bb82ddccbcbb6c/DataStructures/BitArray.cs#L557-L593","documentation":"BitArray.Compile(int) throws ArgumentException when the binary representation of the number requires more bits than the array holds (binaryNumber.Length > field.Length). The constructed BitArray has a fixed capacity, and numbers needing more bits (e.g., a large int compiled into a 4-bit array) cannot be represented.","triggerScenarios":"`bitArray.Compile(number)` where 2^(field.Length) <= number, e.g., compiling 256 into an 8-bit BitArray, or any int whose binary length exceeds the array built from a shorter string.","commonSituations":"Downsizing arrays after refactoring; compiling values from widening input (user input, network data) into a fixed-size array; assuming int.MaxValue-fitting values always work.","solutions":["Use `number > 0 && Convert.ToString(number, 2).Length <= field.Length` as a pre-check, or check number < (1 << field.Length)","Construct the BitArray with a length >= the number's bit length (typically 32 for arbitrary ints)","Mask the number to the array width if truncation is acceptable: `number & ((1 << field.Length) - 1)`","Catch ArgumentException and fall back to a larger BitArray"],"exampleFix":"// before\nsmallArray.Compile(number); // throws if number needs more bits\n// after\nif (Convert.ToString(number, 2).Length <= smallArray.Length)\n{\n    smallArray.Compile(number);\n}\nelse\n{\n    var bigArray = new BitArray(Convert.ToString(number, 2));\n    bigArray.Compile(number);\n}","handlingStrategy":"validation","validationCode":"if (number > 0 && Convert.ToString(number, 2).Length <= bitArray.Length) bitArray.Compile(number);","typeGuard":"static bool FitsBitWidth(int number, int width) => number > 0 && number < (1 << width);","tryCatchPattern":"try { bitArray.Compile(number); } catch (ArgumentException) { /* too big for array: grow or mask */ }","preventionTips":["Match array width to the value domain (8/16/32 bits)","Mask values to array width when truncation is intended","Pre-check bit length for arbitrary int inputs"],"tags":["csharp","bitarray","overflow"],"backgroundTag":"value-out-of-range","analyzedSha":"96e2905cab7bc6b33ac0a34ee5bb82ddccbcbb6c","analyzedAt":"2026-09-13T17:04:01.438Z","contentChangedAt":"2026-09-13T17:04:01.438Z","schemaVersion":2},"datasetVersion":"2026-09-16T04:17:20.429Z"}