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Only official website blockchain
Publish: 2021-05-10 02:28:13
1. It has nothing to do with the Internet. And how many 290x do you have? The number of graphics cards is different, and the requirements for boards and power supply are also different
in addition, I suggest that LZ jump out of this pit or make a good retreat, and don't pay too much in case of bitcoin crash
in addition, I suggest that LZ jump out of this pit or make a good retreat, and don't pay too much in case of bitcoin crash
2. Finland currently uses euro, at today's exchange rate
1 euro = 7.3877 RMB
1 euro = 7.3877 RMB
3. Unknown_Error
4. I'm afraid not.
all branches of Bank of China in the mainland can only accept Australian dollar, Canadian dollar, Swiss franc, Danish krona, euro, British pound, Hong Kong dollar, Indonesian rupee, Japanese yen, Korean dollar, Macao dollar, Norwegian krona, New Zealand Dollar, Philippine Peso, ruble, Swedish krona, Singapore dollar, Thai baht, new Taiwan dollar There are twenty currencies in the US dollar.
all branches of Bank of China in the mainland can only accept Australian dollar, Canadian dollar, Swiss franc, Danish krona, euro, British pound, Hong Kong dollar, Indonesian rupee, Japanese yen, Korean dollar, Macao dollar, Norwegian krona, New Zealand Dollar, Philippine Peso, ruble, Swedish krona, Singapore dollar, Thai baht, new Taiwan dollar There are twenty currencies in the US dollar.
5. At present, the legal currency of Finland is Euro. According to the updated foreign exchange rate at 18:32 Beijing time today: 1 euro = 7.4309 yuan, the transaction price at the bank counter shall prevail. Please adopt it!
6. In the past, Finland's currency was the Finnish mark. "The history of the Finnish mark (1860-2002), 100 Finnish marks is almost 20 euro (many years ago, when it changed into euro, Finland now uses Euro). At present, Finland's currency is Euro, 5 Finnish marks = 1 euro = 7.0092 RMB" current exchange rate ", 20 Finnish marks = 4 Euro points = 0.2804 RMB, This is "historical things can't be measured with money" according to the current exchange rate
7. In small towns in Finland, only banks can exchange foreign currency, and hotels can only exchange a small amount of cash. It is suggested to prepare in advance.
8. When it comes to hash, I believe most students are familiar with it. One of the underlying principles behind blockchain technology, which was very popular before and is still very popular now, is hash. The following is an explanation of hash algorithm from the aspects of the principle and practical application of hash algorithm<
1. What is hash
hash is also called hash and hash, and the corresponding English is hash. The basic principle is to transform any length input into fixed length output through hash algorithm. The mapping rule is the corresponding hash algorithm, and the binary string after the original data mapping is the hash value. MD5 and Sha, which are often used in activity development, are hash algorithms with a long history< br />
echo md5(" This is a test
/ / output result:
in this example, this is a test , which is the original value,
is the hash value obtained by hash algorithm. The whole process of hash algorithm is to map the original value space of any length to the value space of fixed length<
2. Characteristics of hash
what kind of requirements does an excellent hash algorithm need
A) the original data can not be derived from the hash value
from the above example of MD5, it can be seen clearly that there is no corresponding relationship between the mapped data and the original data
b) small changes in the input data will lead to completely different hash values, and the same data will lead to the same value
echo MD5 (& quot; This is a test // Output result: echo MD5 & quote; Here are two test scripts// Output result: we can see that we only changed one text, but the whole hash value changed a lot< (c) hash algorithm is more efficient, and the hash value can be calculated quickly for long text.
d) hash algorithm has less conflict probability.
because the principle of hash is to map the value of input space into hash space, and the space of hash value is much smaller than that of input space. According to the drawer principle, there must be different inputs mapped to the same output. So as a good hash algorithm, we need to minimize the probability of this conflict
1. What is hash
hash is also called hash and hash, and the corresponding English is hash. The basic principle is to transform any length input into fixed length output through hash algorithm. The mapping rule is the corresponding hash algorithm, and the binary string after the original data mapping is the hash value. MD5 and Sha, which are often used in activity development, are hash algorithms with a long history< br />
echo md5(" This is a test
/ / output result:
in this example, this is a test , which is the original value,
is the hash value obtained by hash algorithm. The whole process of hash algorithm is to map the original value space of any length to the value space of fixed length<
2. Characteristics of hash
what kind of requirements does an excellent hash algorithm need
A) the original data can not be derived from the hash value
from the above example of MD5, it can be seen clearly that there is no corresponding relationship between the mapped data and the original data
b) small changes in the input data will lead to completely different hash values, and the same data will lead to the same value
echo MD5 (& quot; This is a test // Output result: echo MD5 & quote; Here are two test scripts// Output result: we can see that we only changed one text, but the whole hash value changed a lot< (c) hash algorithm is more efficient, and the hash value can be calculated quickly for long text.
d) hash algorithm has less conflict probability.
because the principle of hash is to map the value of input space into hash space, and the space of hash value is much smaller than that of input space. According to the drawer principle, there must be different inputs mapped to the same output. So as a good hash algorithm, we need to minimize the probability of this conflict
9. MD5 is 128bits
SHA1 is 160bits
not that MD5 and SHA1 have the same number of bits --
SHA1 is 160bits
not that MD5 and SHA1 have the same number of bits --
10. If you are at level 78, you can practice the dolomite mine, silver mine and Shoushan stone mine, which are the three kinds of ores that consume the most aura. They consume more than 500 points at a time. The Wushan mine and the undersea mine consume about 370 aura
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