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How is a CRC32 checksum calculated?

... 118 The polynomial for CRC32 is: x32 + x26 + x23 + x22 + x16 + x12 + x11 + x10 + x8 + x7 + x5 ...
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pyplot scatter plot marker size

...d the output they produce. # doubling the width of markers x = [0,2,4,6,8,10] y = [0]*len(x) s = [20*4**n for n in range(len(x))] plt.scatter(x,y,s=s) plt.show() gives Notice how the size increases very quickly. If instead we have # doubling the area of markers x = [0,2,4,6,8,10] y = [0]*len(...
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Calculate the date yesterday in JavaScript

... 18 Answers 18 Active ...
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Time complexity of Sieve of Eratosthenes algorithm

... 118 Your n/2 + n/3 + n/5 + … n/97 is not O(n), because the number of terms is not constant. [Ed...
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Extract every nth element of a vector

... 163 a <- 1:120 b <- a[seq(1, length(a), 6)] ...
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C语言面试那些事儿──一道指针与数组问题 - c++1y / stl - 清泛IT社区,为创新赋能!

...下代码: int main(int argc, char** argv) {     int a[5] = {1,2,3,4,5};     int* ptr = (int*)(&a + 1);     printf("%d,%d\n", *(a+1), *(ptr-1));     return 0; }这道题在很多所谓经典C语言面试题里是常见的不能再常见,你...
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游戏中的算法与计算思维 04:第一张、第二张与匹配状态 · App Inventor 2 中文网

...签_标题 标签 Width=Fill parent;FontSize=24;TextColor=#183153;Text=记忆翻牌 · 第 4课 逐步搭建 增加第一、第二、已配对和步数变量,定义 0盖住/1翻开/2匹配。 Touched 只处理状态为 0 的牌;第一为...
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游戏中的算法与计算思维 07:按难度保存最佳成绩 · App Inventor 2 中文网

... 先预测,再运行 四对 4 步 20 秒、六对 6 步 10 秒,谁更好? 先记下自己的答案,运行起始工程与完成工程比较;答案见文末。 开始实战 以上一课完成工程为起点,先导入并运行,再另存为本课...
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How to round up a number in Javascript?

... 316 /** * @param num The number to round * @param precision The number of decimal places to prese...
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Extracting specific columns from a data frame

... 10 Answers 10 Active ...