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https://pintia.cn/problem-sets/994805342720868352/problems/994805437411475456 Eva is trying to make her own color stripe out of a given one. She would 阅读全文
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#include <iostream> #include <stdlib.h> #include <time.h> #include <stdio.h> using namespace std; class ErLingSiBa { private: int Map[4][4], tmp[4][4] 阅读全文
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https://leetcode.com/problems/squares-of-a-sorted-array/ Given an array of integers A sorted in non-decreasing order, return an array of the squares o 阅读全文
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https://leetcode.com/problems/add-digits/ Given a non-negative integer num, repeatedly add all its digits until the result has only one digit. Example 阅读全文
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https://leetcode.com/problems/number-of-segments-in-a-string/ Count the number of segments in a string, where a segment is defined to be a contiguous 阅读全文
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https://leetcode.com/problems/unique-morse-code-words/ International Morse Code defines a standard encoding where each letter is mapped to a series of 阅读全文
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https://leetcode.com/problems/to-lower-case/ Implement function ToLowerCase() that has a string parameter str, and returns the same string in lowercas 阅读全文
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https://leetcode.com/problems/rotated-digits/ X is a good number if after rotating each digit individually by 180 degrees, we get a valid number that 阅读全文
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https://leetcode.com/problems/detect-capital/ Given a word, you need to judge whether the usage of capitals in it is right or not. We define the usage 阅读全文
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https://leetcode.com/problems/ransom-note/ Given an arbitrary ransom note string and another string containing letters from all the magazines, write a 阅读全文