{ "data": { "question": { "questionId": "100180", "questionFrontendId": "面试题 05.01", "categoryTitle": "LCCI", "boundTopicId": 46259, "title": "Insert Into Bits LCCI", "titleSlug": "insert-into-bits-lcci", "content": "

You are given two 32-bit numbers, N and M, and two bit positions, i and j. Write a method to insert M into N such that M starts at bit j and ends at bit i. You can assume that the bits j through i have enough space to fit all of M. That is, if M = 10011, you can assume that there are at least 5 bits between j and i. You would not, for example, have j = 3 and i = 2, because M could not fully fit between bit 3 and bit 2.

\r\n\r\n

Example1:

\r\n\r\n
\r\n Input: N = 10000000000, M = 10011, i = 2, j = 6\r\n Output: N = 10001001100\r\n
\r\n\r\n

Example2:

\r\n\r\n
\r\n Input:  N = 0, M = 11111, i = 0, j = 4\r\n Output: N = 11111\r\n
\r\n", "translatedTitle": "插入", "translatedContent": "

给定两个整型数字 N 与 M，以及表示比特位置的 i 与 j（i <= j，且从 0 位开始计算）。

\n\n

编写一种方法，使 M 对应的二进制数字插入 N 对应的二进制数字的第 i ~ j 位区域，不足之处用 0 补齐。具体插入过程如图所示。

\n\n

\"\"

\n\n

题目保证从 i 位到 j 位足以容纳 M， 例如： M = 10011，则 i～j 区域至少可容纳 5 位。

\n\n

 

\n\n

示例1:

\n\n
\n 输入：N = 1024(10000000000), M = 19(10011), i = 2, j = 6\n 输出：N = 1100(10001001100)\n
\n\n

示例2:

\n\n
\n 输入： N = 0, M = 31(11111), i = 0, j = 4\n 输出：N = 31(11111)\n
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exact-integer? exact-integer? exact-integer? exact-integer?)\n\n )", "__typename": "CodeSnippetNode" }, { "lang": "Erlang", "langSlug": "erlang", "code": "-spec insert_bits(N :: integer(), M :: integer(), I :: integer(), J :: integer()) -> integer().\ninsert_bits(N, M, I, J) ->\n .", "__typename": "CodeSnippetNode" }, { "lang": "Elixir", "langSlug": "elixir", "code": "defmodule Solution do\n @spec insert_bits(n :: integer, m :: integer, i :: integer, j :: integer) :: integer\n def insert_bits(n, m, i, j) do\n\n end\nend", "__typename": "CodeSnippetNode" } ], "stats": "{\"totalAccepted\": \"11.9K\", \"totalSubmission\": \"23.5K\", \"totalAcceptedRaw\": 11919, \"totalSubmissionRaw\": 23457, \"acRate\": \"50.8%\"}", "hints": [ "把这个分成几个部分。先将精力放在清除适当的位上。", "要清除这些位，创建一个看起来像是一系列1，然后是0，然后是1的“位掩码”。", "在开始或结束时很容易创建一个0的位掩码。但是，有一堆0时，你如何在中间创建一个零位掩码？简单的做法是，为左侧创建一个位掩码，然后为右侧创建一个位掩码。然后你可以合并两边。" ], "solution": null, "status": null, "sampleTestCase": "1024\n19\n2\n6", "metaData": "{\"name\": \"insertBits\", \"params\": [{\"name\": \"N\", \"type\": \"integer\"}, {\"name\": \"M\", \"type\": \"integer\"}, {\"name\": \"i\", \"type\": \"integer\"}, {\"name\": \"j\", \"type\": \"integer\"}], \"return\": {\"type\": \"integer\"}}", "judgerAvailable": true, "judgeType": "large", "mysqlSchemas": [], "enableRunCode": true, "envInfo": "{\"cpp\":[\"C++\",\"

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