Max Consecutive Ones Problem


Description

LeetCode Problem 485.

Given a binary array nums, return the maximum number of consecutive 1’s in the array.

Example 1:

1
2
3
Input: nums = [1,1,0,1,1,1]
Output: 3
Explanation: The first two digits or the last three digits are consecutive 1s. The maximum number of consecutive 1s is 3.

Example 2:

1
2
Input: nums = [1,0,1,1,0,1]
Output: 2

Constraints:

  • 1 <= nums.length <= 10^5
  • nums[i] is either 0 or 1.


Sample C++ Code

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
class Solution {
public:
    int findMaxConsecutiveOnes(vector<int>& nums) {
        int n = nums.size();
        int maxones = 0;
        int currones = 0;
        for (int i = 0; i < n; i ++) {
            if (nums[i] == 1) {
                currones ++;
                maxones = max(maxones, currones);
            } else {
                currones = 0;
            }
        }
        return maxones;
    }
};




Related Posts

Walking Robot Simulation Problem

LeetCode 874. A robot on an infinite XY-plane starts at...

Valid Mountain Array Problem

LeetCode 941. Given an array of integers arr, return true...

Sum Of Even Numbers After Queries Problem

LeetCode 985. You are given an integer array nums and...

Partition Array Into Disjoint Intervals Problem

LeetCode 915. Given an integer array nums, partition it into...

Monotonic Array Problem

LeetCode 896. An array is monotonic if it is either...

Maximize Distance To Closest Person Problem

LeetCode 849. You are given an array representing a row...