LeetCode 1732: Find the Highest Altitude Solution

Master LeetCode problem 1732 (Find the Highest Altitude), 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.

1732. Find the Highest Altitude

Easy

Array Prefix Sum

Problem Explanation

Explanation

To find the highest altitude reached during the road trip, we can iterate through the gain array and keep track of the current altitude. We start with altitude 0 and update it based on the net gain at each point. Finally, we return the maximum altitude reached.

Initialize a variable altitude to 0.
Iterate through the gain array.
Update the altitude by adding the gain at each point.
Update the highest altitude reached if the current altitude is greater than the previous highest altitude.
Return the highest altitude reached.

Time complexity: O(n)
Space complexity: O(1)

Solution Code

class Solution {
    public int largestAltitude(int[] gain) {
        int maxAltitude = 0;
        int altitude = 0;
        
        for (int i = 0; i < gain.length; i++) {
            altitude += gain[i];
            maxAltitude = Math.max(maxAltitude, altitude);
        }
        
        return maxAltitude;
    }
}

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