LeetCode 1051: Height Checker Solution
Master LeetCode problem 1051 (Height Checker), 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.
1051. Height Checker
Problem Explanation
Explanation:
- We need to compare the current order of students' heights with the expected order.
- To do this, we can create a sorted copy of the expected order and then compare each student's height with the corresponding height in the sorted expected order.
- Count the number of indices where the heights do not match. Solution:
Solution Code
class Solution {
public int heightChecker(int[] heights) {
int[] expected = Arrays.copyOf(heights, heights.length);
Arrays.sort(expected);
int count = 0;
for (int i = 0; i < heights.length; i++) {
if (heights[i] != expected[i]) {
count++;
}
}
return count;
}
}Try It Yourself
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