Others

Question 1

Priority Queue sorting ascending in C++

Answer 1

priority_queue, greater> queue;

Question 2

how left join works?

Answer 2

it keeps all original records of left table and try to find corresponded values in the right table
L1 R2
L2 -
L3 -
L4 R5

Question 3

what is the avalanche effect?

Answer 3

In cryptography, the avalanche effect is the desirable property of cryptographic algorithms, typically block ciphers and cryptographic hash functions, wherein if an input is changed slightly (for example, flipping a single bit), the output changes significantly