Day 24.2.txt

896. Monotonic Array

An array is monotonic if it is either monotone increasing or monotone decreasing.

An array nums is monotone increasing if for all i <= j, nums[i] <= nums[j].  An array nums is monotone decreasing if for all i <= j, nums[i] >= nums[j].

Return true if and only if the given array nums is monotonic.

 

Example 1:

Input: nums = [1,2,2,3]
Output: true
Example 2:

Input: nums = [6,5,4,4]
Output: true
Example 3:

Input: nums = [1,3,2]
Output: false
Example 4:

Input: nums = [1,2,4,5]
Output: true
Example 5:

Input: nums = [1,1,1]
Output: true
 

Note:

1 <= nums.length <= 50000
-100000 <= nums[i] <= 100000


class Solution {
    public boolean isMonotonic(int[] n) {
        int i,c=0,m=0;
        for(i=0;i<n.length-1;i++)
        {
            if(n[i+1]>=n[i])
                c++;
        }
        for(i=0;i<n.length-1;i++)
        {
            if(n[i+1]<=n[i])
                m++;
        }
        if(c==n.length-1||m==n.length-1)
            return true;
        else
            return false;
    }
}