Watering Plants solution leetcode
You want to water
n plants in your garden with a watering can. The plants are arranged in a row and are labeled from
n - 1 from left to right where the
ith plant is located at
x = i. There is a river at
x = -1 that you can refill your watering can at.
Each plant needs a specific amount of water. You will water the plants in the following way:
- Water the plants in order from left to right.
- After watering the current plant, if you do not have enough water to completely water the next plant, return to the river to fully refill the watering can.
- You cannot refill the watering can early. Watering Plants solution leetcode
You are initially at the river (i.e.,
x = -1). It takes one step to move one unit on the x-axis.
Given a 0-indexed integer array
n integers, where
plants[i] is the amount of water the
ith plant needs, and an integer
capacity representing the watering can capacity, return the number of steps needed to water all the plants.
Example 1: Watering Plants solution leetcode
Input: plants = [2,2,3,3], capacity = 5 Output: 14 Explanation: Start at the river with a full watering can: - Walk to plant 0 (1 step) and water it. Watering can has 3 units of water. - Walk to plant 1 (1 step) and water it. Watering can has 1 unit of water. - Since you cannot completely water plant 2, walk back to the river to refill (2 steps). - Walk to plant 2 (3 steps) and water it. Watering can has 2 units of water. - Since you cannot completely water plant 3, walk back to the river to refill (3 steps). - Walk to plant 3 (4 steps) and water it. Steps needed = 1 + 1 + 2 + 3 + 3 + 4 = 14.
Input: plants = [1,1,1,4,2,3], capacity = 4 Output: 30 Explanation: Start at the river with a full watering can: - Water plants 0, 1, and 2 (3 steps). Return to river (3 steps). - Water plant 3 (4 steps). Return to river (4 steps). - Water plant 4 (5 steps). Return to river (5 steps). - Water plant 5 (6 steps). Steps needed = 3 + 3 + 4 + 4 + 5 + 5 + 6 = 30.
Input: plants = [7,7,7,7,7,7,7], capacity = 8 Output: 49 Explanation: You have to refill before watering each plant. Steps needed = 1 + 1 + 2 + 2 + 3 + 3 + 4 + 4 + 5 + 5 + 6 + 6 + 7 = 49.
Constraints: Watering Plants solution leetcode
n == plants.length
1 <= n <= 1000
1 <= plants[i] <= 106
max(plants[i]) <= capacity <= 109