How to Solve Find the Key of the Numbers Problem
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Find the Key of the Numbers
You are given three positive integers num1, num2, and num3. The key of num1, num2, and num3 is defined as a four-digit number such that: Initially, if any number has less than four digits, it is padde...
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Understanding the Find the Key of the Numbers Problem
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Problem Statement
You are given three positive integers num1, num2, and num3. The key of num1, num2, and num3 is defined as a four-digit number such that: Initially, if any number has less than four digits, it is padded with leading zeros. The ith digit (1 <= i <= 4) of the key is generated by taking the smallest digit among the ith digits of num1, num2, and num3. Return the key of the three numbers without leading zeros (if any).
Find the Key of the Numbers
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Examples
num1 = 1, num2 = 10, num3 = 10000On padding, num1 becomes "0001", num2 becomes "0010", and num3 remains "1000". The 1st digit of the key is min(0, 0, 1). The 2nd digit of the key is min(0, 0, 0). The 3rd digit of the key is min(0, 1, 0). The 4th digit of the key is min(1, 0, 0). Hence, the key is "0000", i.e. 0.
num1 = 987, num2 = 879, num3 = 798777num1 = 1, num2 = 2, num3 = 31Constraints
1 <= num1, num2, num3 <= 9999How Interview Coder Helps with Leetcode Problems
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