www.fatihkabakci.com

Personal Website and Computer Science TUR EN

Interview Question Max Consecutive Ones

Last update: 2/6/2017 5:45:00 AM

By Fatih KABAKCI

The problem is to find out maximum number of consecutive ones in a given array.

Problem #485 - Max Consecutive Ones

Description: Given a binary array, find the maximum number of consecutive 1s in this array.

Example 1:
Input: [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.
Note:

The input array will only contain 0 and 1.
The length of input array is a positive integer and will not exceed 10,000.

Difficulty: Easy

Solution in Java

package com.fatihkabakci.Easy.MaxConsecutiveOnes;

/**
 * @author fkabakci
 * Problem Description: Given a binary array, find the maximum number of consecutive 1s in this array.
 * 
 * Example 1:
 * 
 * Input: [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.
 * 
 * Note:
 * The input array will only contain 0 and 1.
 * The length of input array is a positive integer and will not exceed 10,000
 * 
 * Solution:
 * Init:
 * consecutiveOnes is a counter of 1s.
 * maxConsecutiveOnes is a max number of 1s.
 * 
 * 1. Increase consecutiveOnes until the element is 0.
 * 2. If encountered with 1, update current max value.
 * 3. Otherwise, then reset consecutiveOnes to 0.
 */
public class Solution {
	public int findMaxConsecutiveOnes(int[] nums) {
		int consecutiveOnes = 0, maxConsecutiveOnes = 0;
		for (int num : nums) {
			if (num == 1) {
				consecutiveOnes++;
				maxConsecutiveOnes = Math.max(maxConsecutiveOnes, consecutiveOnes);
			} else
				consecutiveOnes = 0;
		}
		return maxConsecutiveOnes;
	}
}

There has been no comment yet

Name:


Question/Comment
   Please verify the image




The Topics in Computer Science

Search this site for





 

Software & Algorithms

icon

In mathematics and computer science, an algorithm is a step-by-step procedure for calculations. Algorithms are used for calculation, data processing, and automated reasoning.

Programming Languages

icon

A programming language is a formal constructed language designed to communicate instructions to a machine, particularly a computer. It can be used to create programs to control the behavior of a machine. Java,C, C++,C#

Database

icon

A database is an organized collection of data. The data are typically organized to model aspects of reality in a way that supports processes requiring information.

Hardware

icon

Computer hardware is the collection of physical elements that constitutes a computer system. Computer hardware refers to the physical parts or components of a computer such as the monitor, memory, cpu.

Web Technologies

icon

Web development is a broad term for the work involved in developing a web site for the Internet or an intranet. Html,Css,JavaScript,ASP.Net,PHP are one of the most popular technologies. J2EE,Spring Boot, Servlet, JSP,JSF, ASP

Mobile Technologies

icon

Mobile application development is the process by which application software is developed for low-power handheld devices, such as personal digital assistants, enterprise digital assistants or mobile phones. J2ME

Network

icon

A computer network or data network is a telecommunications network that allows computers to exchange data. In computer networks, networked computing devices pass data to each other along data connections.

Operating Systems

icon

An operating system is software that manages computer hardware and software resources and provides common services for computer programs. The OS is an essential component of the system software in a computer system. Linux,Windows

Computer Science

icon

Computer science is the scientific and practical approach to computation and its applications.A computer scientist specializes in the theory of computation and the design of computational systems.