Find the K-Beauty of a Number - Practice Coding | SlaveCode
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2269. Find the K-Beauty of a Number
Easy
10 Points
Math
String
Sliding Window
The k-beauty of an integer num is defined as the number of substrings of num when it is read as a string that meet the following conditions:
Given integers num and k, return the k-beauty of num.
Note:
A substring is a contiguous sequence of characters in a string.
Examples
Example 1
Input: num = 240, k = 2
Output: 2
Explanation: The following are the substrings of num of length k:
- "24" from "240": 24 is a divisor of 240.
- "40" from "240": 40 is a divisor of 240.
Therefore, the k-beauty is 2.
Example 2
Input: num = 430043, k = 2
Output: 2
Explanation: The following are the substrings of num of length k:
- "43" from "430043": 43 is a divisor of 430043.
- "30" from "430043": 30 is not a divisor of 430043.
- "00" from "430043": 0 is not a divisor of 430043.
- "04" from "430043": 4 is not a divisor of 430043.
- "43" from "430043": 43 is a divisor of 430043.
Therefore, the k-beauty is 2.
Constraints
1 <= num <= 109
1 <= k <= num.length (taking num as a string)
2269. Find the K-Beauty of a Number
Easy
10 Points
Math
String
Sliding Window
The k-beauty of an integer num is defined as the number of substrings of num when it is read as a string that meet the following conditions:
Given integers num and k, return the k-beauty of num.
Note:
A substring is a contiguous sequence of characters in a string.
Examples
Example 1
Input: num = 240, k = 2
Output: 2
Explanation: The following are the substrings of num of length k:
- "24" from "240": 24 is a divisor of 240.
- "40" from "240": 40 is a divisor of 240.
Therefore, the k-beauty is 2.
Example 2
Input: num = 430043, k = 2
Output: 2
Explanation: The following are the substrings of num of length k:
- "43" from "430043": 43 is a divisor of 430043.
- "30" from "430043": 30 is not a divisor of 430043.
- "00" from "430043": 0 is not a divisor of 430043.
- "04" from "430043": 4 is not a divisor of 430043.
- "43" from "430043": 43 is a divisor of 430043.
Therefore, the k-beauty is 2.