7. TikTok Credits Distribution Challenge
In the grand finale of a prestigious TikTok tournament, the organizers have prepared several boxes filled with TikTok credits as prizes for the participants. They know exactly how many participants will compete in the tournament and want to ensure that every participant receives an equal number of TikTok credits to avoid any disappointment. Once a box is opened, all the credits inside it must be distributed.
You need to find all distinct ways to select credit boxes such that the total sum of credits in each combination can be evenly distributed among P participants. If no such combinations exist, return 0. Return the result modulo 10^9+7.
Example
Input:
participants = 6
credits = [12, 18, 24, 36]
Output:
15
Explanation:
To determine how many distinct combinations of credit boxes can be selected such that the total credits can be evenly distributed among 6 participants, follow these steps:
- Single Box Combinations:
- [12], sum = 12, 12 % 6 = 0 (valid)
- [18], sum = 18, 18 % 6 = 0 (valid)
- [24], sum = 24, 24 % 6 = 0 (valid)
- [36], sum = 36, 36 % 6 = 0 (valid)
- Two Box Combinations:
- [12, 18], sum = 30, 30 % 6 = 0 (valid)
- [12, 24], sum = 36, 36 % 6 = 0 (valid)
- [12, 36], sum = 48, 48 % 6 = 0 (valid)
6. ViralContentBalancer
The TikTok engineering team is developing a new feature for analyzing viral trends by studying content sequences represented by a string content of length n, consisting of lowercase alphabets. The team has discovered that to make a video go viral, each element (character) in the content sequence should have an equal frequency.
In one operation, a character can be appended or removed from the content string. Your task is to find the minimum number of operations required to balance the frequency of all characters in the content sequence.
Example
Input:
content = "xzyxza"
Output:
2
Explanation:
For the content "xzyxza", the characters 'z' and 'x' have higher frequencies than others. To balance the frequency of all characters, one possible solution is to append one 'a' and one 'y', resulting in content = "xzyxzaya". Alternatively, removing one 'x' and one 'z' would also achieve a balanced distribution, with the new content sequence content = "xyza".
Both approaches result in a valid balanced content sequence, and the minimum number of operations required is 2.
Function Description
Complete the function balanceContent in the editor below.
balanceContent has the following parameter:
string content: the original content sequence.
Returns
int: the minimum number of operations to balance the content sequence.
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