LeetCode 3184: Count Pairs That Form a Complete Day I Solution
Master LeetCode problem 3184 (Count Pairs That Form a Complete Day I), a easy challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.
3184. Count Pairs That Form a Complete Day I
Problem Explanation
Explanation
To solve this problem, we can iterate through all pairs of indices in the input array and check if the sum of the corresponding elements forms a complete day (divisible by 24). We can use a nested loop to iterate through all pairs, keeping track of the count of valid pairs. The time complexity of this approach is O(n^2) where n is the number of elements in the input array.
Solution Code
class Solution {
public int countPairs(int[] hours) {
int count = 0;
for (int i = 0; i < hours.length; i++) {
for (int j = i + 1; j < hours.length; j++) {
if ((hours[i] + hours[j]) % 24 == 0) {
count++;
}
}
}
return count;
}
}Try It Yourself
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