{ "data": { "question": { "questionId": "228", "questionFrontendId": "228", "boundTopicId": null, "title": "Summary Ranges", "titleSlug": "summary-ranges", "content": "

You are given a sorted unique integer array nums.

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A range [a,b] is the set of all integers from a to b (inclusive).

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Return the smallest sorted list of ranges that cover all the numbers in the array exactly. That is, each element of nums is covered by exactly one of the ranges, and there is no integer x such that x is in one of the ranges but not in nums.

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Each range [a,b] in the list should be output as:

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Example 1:

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\nInput: nums = [0,1,2,4,5,7]\nOutput: ["0->2","4->5","7"]\nExplanation: The ranges are:\n[0,2] --> "0->2"\n[4,5] --> "4->5"\n[7,7] --> "7"\n
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Example 2:

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\nInput: nums = [0,2,3,4,6,8,9]\nOutput: ["0","2->4","6","8->9"]\nExplanation: The ranges are:\n[0,0] --> "0"\n[2,4] --> "2->4"\n[6,6] --> "6"\n[8,9] --> "8->9"\n
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Constraints:

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Your code is compiled with level two optimization (-O2). AddressSanitizer is also enabled to help detect out-of-bounds and use-after-free bugs.

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Most standard library headers are already included automatically for your convenience.

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OpenJDK 17 . Java 8 features such as lambda expressions and stream API can be used.

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Most standard library headers are already included automatically for your convenience.

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Python 2.7.12.

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C# 10 with .NET 6 runtime

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Your code is compiled with debug flag enabled (/debug).

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Node.js 16.13.2.

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