Implement the myAtoi(string s) function, which converts a string to a 32-bit signed integer (similar to C/C++'s atoi function).
The algorithm for myAtoi(string s) is as follows:
'-' or '+'. Read this character in if it is either. This determines if the final result is negative or positive respectively. Assume the result is positive if neither is present."123" -> 123, "0032" -> 32). If no digits were read, then the integer is 0. Change the sign as necessary (from step 2).[-231, 231 - 1], then clamp the integer so that it remains in the range. Specifically, integers less than -231 should be clamped to -231, and integers greater than 231 - 1 should be clamped to 231 - 1.Note:
\n\n' ' is considered a whitespace character.\n
Example 1:
\n\n\nInput: s = "42"\nOutput: 42\nExplanation: The underlined characters are what is read in, the caret is the current reader position.\nStep 1: "42" (no characters read because there is no leading whitespace)\n ^\nStep 2: "42" (no characters read because there is neither a '-' nor '+')\n ^\nStep 3: "42" ("42" is read in)\n ^\nThe parsed integer is 42.\nSince 42 is in the range [-231, 231 - 1], the final result is 42.\n\n\nExample 2:
\n\n\nInput: s = " -42"\nOutput: -42\nExplanation:\nStep 1: " -42" (leading whitespace is read and ignored)\n ^\nStep 2: " -42" ('-' is read, so the result should be negative)\n ^\nStep 3: " -42" ("42" is read in)\n ^\nThe parsed integer is -42.\nSince -42 is in the range [-231, 231 - 1], the final result is -42.\n\n\nExample 3:
\n\n\nInput: s = "4193 with words"\nOutput: 4193\nExplanation:\nStep 1: "4193 with words" (no characters read because there is no leading whitespace)\n ^\nStep 2: "4193 with words" (no characters read because there is neither a '-' nor '+')\n ^\nStep 3: "4193 with words" ("4193" is read in; reading stops because the next character is a non-digit)\n ^\nThe parsed integer is 4193.\nSince 4193 is in the range [-231, 231 - 1], the final result is 4193.\n\n\n\n
Constraints:
\n\n0 <= s.length <= 200s consists of English letters (lower-case and upper-case), digits (0-9), ' ', '+', '-', and '.'.Compiled with clang 11 using the latest C++ 20 standard.
Your code is compiled with level two optimization (-O2). AddressSanitizer is also enabled to help detect out-of-bounds and use-after-free bugs.
Most standard library headers are already included automatically for your convenience.
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Most standard library headers are already included automatically for your convenience.
\\r\\nIncludes Pair class from https://docs.oracle.com/javase/8/javafx/api/javafx/util/Pair.html.
Python 2.7.12.
Most libraries are already imported automatically for your convenience, such as array, bisect, collections. If you need more libraries, you can import it yourself.
\\r\\n\\r\\nFor Map/TreeMap data structure, you may use sortedcontainers library.
\\r\\n\\r\\nNote that Python 2.7 will not be maintained past 2020. For the latest Python, please choose Python3 instead.
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Your code is compiled with level one optimization (-O1). AddressSanitizer is also enabled to help detect out-of-bounds and use-after-free bugs.
Most standard library headers are already included automatically for your convenience.
\\r\\n\\r\\nFor hash table operations, you may use uthash. \\\"uthash.h\\\" is included by default. Below are some examples:
\\r\\n\\r\\n1. Adding an item to a hash.\\r\\n
\\r\\nstruct hash_entry {\\r\\n int id; /* we'll use this field as the key */\\r\\n char name[10];\\r\\n UT_hash_handle hh; /* makes this structure hashable */\\r\\n};\\r\\n\\r\\nstruct hash_entry *users = NULL;\\r\\n\\r\\nvoid add_user(struct hash_entry *s) {\\r\\n HASH_ADD_INT(users, id, s);\\r\\n}\\r\\n\\r\\n\\r\\n\\r\\n2. Looking up an item in a hash:\\r\\n
\\r\\nstruct hash_entry *find_user(int user_id) {\\r\\n struct hash_entry *s;\\r\\n HASH_FIND_INT(users, &user_id, s);\\r\\n return s;\\r\\n}\\r\\n\\r\\n\\r\\n\\r\\n3. Deleting an item in a hash:\\r\\n
\\r\\nvoid delete_user(struct hash_entry *user) {\\r\\n HASH_DEL(users, user); \\r\\n}\\r\\n\\r\\n\"], \"csharp\": [\"C#\", \"\"], \"javascript\": [\"JavaScript\", \"Node.js 16.13.2.
Your code is run with --harmony flag, enabling new ES6 features.
lodash.js library is included by default.
\\r\\n\\r\\nFor Priority Queue / Queue data structures, you may use 5.3.0 version of datastructures-js/priority-queue and 4.2.1 version of datastructures-js/queue.
\"], \"ruby\": [\"Ruby\", \"Ruby 3.1
Some common data structure implementations are provided in the Algorithms module: https://www.rubydoc.info/github/kanwei/algorithms/Algorithms
\"], \"swift\": [\"Swift\", \"Swift 5.5.2.
Go 1.21
Support https://godoc.org/github.com/emirpasic/gods@v1.18.1 library.
\"], \"python3\": [\"Python3\", \"Python 3.10.
Most libraries are already imported automatically for your convenience, such as array, bisect, collections. If you need more libraries, you can import it yourself.
\\r\\n\\r\\nFor Map/TreeMap data structure, you may use sortedcontainers library.
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Kotlin 1.9.0.
Rust 1.58.1
Supports rand v0.6\\u00a0from crates.io
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With bcmath module
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Your code is run with --harmony flag, enabling new ES2022 features.
lodash.js library is included by default.
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Dart 2.17.3
\\r\\n\\r\\nYour code will be run directly without compiling
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