ARTS-week41

发表于 分类于 本文字数： 643 阅读时长 ≈ 1 分钟

Algorithms

Valid Perfect Square 

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class Solution {
public:
    bool isPerfectSquare(int num) {
        for (int i = 1; i <= num / i; ++i) {
            if (i * i == num) return true;
        }
        return false;
    }
};

Sum of Two Integers 

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class Solution {
public:
    int getSum(int a, int b) {
        if(b == 0) {
            return a;
        }
        int sum, tmp;
        sum = a ^ b;
        tmp = (a & b & 0x7fffffff) << 1;
        return getSum(sum, tmp);
    }
};

Review

本周阅读英文文章:
1、Fighting Back Against DDoS Attacks

2、Feature Engineering in Python: Rare values

3、Building Games With Artificial Intelligence

Technique

阅读了RFC2511，学习了X.509证书的请求格式:
https://tools.ietf.org/html/rfc2511

Share

使用PDB进行Python程序的调试:
https://pymotw.com/3/pdb/index.html