Total count

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Intuition

Count elements <= p and elements that need to be replaced to keep array sorted with bounded differences.

Algorithm

1Sort and binary search for elements <= p. Count is upper_bound(p) index.

Common Pitfalls

•Depends on exact problem variant. Common: count of elements <= threshold using binary search on sorted array.

Total count.java

Java

// Approach: Count elements satisfying the given condition, often using binary search or linear scan.
// Time: O(n log n) Space: O(1)
class Solution {
    int totalCount(int k, int[] arr) {
        int count = 0;

        for (int num : arr)
            count += (num + k - 1) / k;

        return count;
    }
}

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