LeetCode 806: Number of Lines To Write String Solution

Master LeetCode problem 806 (Number of Lines To Write String), 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.

806. Number of Lines To Write String

Easy

Array String

Problem Explanation

Explanation

To solve this problem, we iterate through each character in the input string s. We keep track of the total width written so far and the number of lines used. If adding the width of the current character exceeds 100 pixels, we increment the number of lines and reset the total width to the width of the current character. After iterating through all characters, we return the total number of lines and the width of the last line.

Time complexity: O(n) where n is the length of the input string s.
Space complexity: O(1)

Solution Code

class Solution {
    public int[] numberOfLines(int[] widths, String s) {
        int lines = 1, width = 0;
        
        for (char c : s.toCharArray()) {
            int charWidth = widths[c - 'a'];
            if (width + charWidth > 100) {
                lines++;
                width = charWidth;
            } else {
                width += charWidth;
            }
        }
        
        return new int[]{lines, width};
    }
}

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