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Data Interview Questions
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sql and python
Consider the following bit string 11?100 you need to write a method which can replace this question mark with 1 & 0 Output should be: 110100 , 111100 This should be implemented for N number of question mark each time replaced with 1 and then with 0
You are given an integer list coins representing coins of different denominations and an integer amount representing a total amount of money. Return the fewest number of coins that you need to make up that amount. If that amount of money cannot be made up by any combination of the coins, return {}. You may assume that you have an infinite number of each kind of coin. Example 1: Input: coins = [1, 5, 6, 9, 15], amount = 31 Output: {15:2, 1:1} Example 2: Input: coins = [1, 5, 6, 9, 15], amount = 100 Output: {15:6, 9:1, 1:1}
Would I be able to spend money to "recharge" my account so I can continue to do my job?
c'est quoi? Design model
If you do a xor b xor a, what is the end result?
SQL, pandas
How to use SQL
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