Can Place Flowers
Given a flowerbed (array of 0s and 1s) and n new flowers, return True if n new flowers can be planted without violating the no-adjacent rule.
Example:
1,0,0,0,1 1
True
- The given flowerbed is represented as an array:
[1,0,0,0,1], where0indicates an empty plot and1indicates a plot with a flower. - We need to plant
1new flower, so we look for a plot where we can plant it without violating the no-adjacent rule. - We find that we can plant the new flower at the third plot:
[1,0,0,1,1]or at other positions, but since we only need to plant1flower, we can choose any of these valid positions. - The final output is
Truebecause we can plant the new flower without violating the rule.
Constraints:
- 1 <= len(flowerbed) <= 2 * 10^4
- flowerbed[i] is 0 or 1
- No two adjacent flowers exist in initial state
Background Knowledge
The "Can Place Flowers" problem involves arrays and basic logic. To tackle this problem, you should be familiar with iterating through arrays, checking conditions, and keeping track of state. The problem statement implies a constraint satisfaction problem, where we need to ensure that a certain condition (no adjacent flowers) is met while trying to plant a given number of flowers.
In the context of arrays, it's essential to understand how to access and modify elements. You should be comfortable with using indices to traverse the array and checking the values of adjacent elements. The problem also involves conditional statements, which are used to make decisions based on the current state of the array. Additionally, you should be aware of how to use loops to iterate through the array and perform actions repeatedly.
The concept of greedy algorithms might also be relevant in this context. A greedy algorithm makes the locally optimal choice at each step, hoping that it will lead to a globally optimal solution. In the case of the "Can Place Flowers" problem, a greedy approach might involve trying to plant flowers in the first available spot that satisfies the no-adjacent rule.
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