ConsecutivePairs.java

// Simple consecutive pairs

// DESCRIPTION:
// In this Kata your task will be to return the count of pairs that have consecutive numbers as follows:

// pairs([1,2,5,8,-4,-3,7,6,5]) = 3
// The pairs are selected as follows [(1,2),(5,8),(-4,-3),(7,6),5]
// --the first pair is (1,2) and the numbers in the pair are consecutive; Count = 1
// --the second pair is (5,8) and are not consecutive
// --the third pair is (-4,-3), consecutive. Count = 2
// --the fourth pair is (7,6), also consecutive. Count = 3. 
// --the last digit has no pair, so we ignore.
// More examples in the test cases.

// Good luck!

// Please also try Simple time difference

import java.util.Arrays;
import java.lang.Math;

class Solution{
    public static int solve(int [] arr){
       int consecutive = 0;
        for(int i = 0; i < arr.length-1; i+=2){
          int result = Math.abs(arr[i]-arr[i+1]);
        if(result == 1){
          consecutive++;
        }
      }
      return consecutive;
    }
}