Blind 75

Container With Most Water

Problem
LC 11
Category
Array
File
blind75_LC11ContainerWithMostWater.java
Path
pkg5leetcode/blind75/blind75_LC11ContainerWithMostWater.java
Package
pkg5leetcode.blind75
Command
java pkg5leetcode/blind75/blind75_LC11ContainerWithMostWater.java
Approach
Two pointers move shorter line inward.
Complexity
Time O(n), Space O(1)

LeetCode solutions

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pkg5leetcode/blind75/blind75_LC11ContainerWithMostWater.java
1package pkg5leetcode.blind75;2 3/*4 * Container With Most Water | LC 115 * APPROACH: Two pointers move shorter line inward.6 * COMPLEXITY: Time O(n), Space O(1)7 */8public class blind75_LC11ContainerWithMostWater {9    static int maxArea(int[] h) {10        int lo = 0, hi = h.length - 1, best = 0;11        while (lo < hi) {12            best = Math.max(best, Math.min(h[lo], h[hi]) * (hi - lo));13            if (h[lo] < h[hi]) lo++; else hi--;14        }15        return best;16    }17 18    public static void main(String[] args) {19        check(maxArea(new int[]{1, 8, 6, 2, 5, 4, 8, 3, 7}) == 49, "case1");20        check(maxArea(new int[]{1, 1}) == 1, "case2");21        System.out.println("all tests passed");22    }23 24    static void check(boolean cond, String name) {25        if (!cond) throw new AssertionError("FAILED: " + name);26        System.out.println("  PASS " + name);27    }28}