To calculate max value base condition to follow 
max=10
max=-1
get every number > max
      max=that number


5>10


1 2 3 4 5

max=-200

-300 -310 -320 -330 -340

-10^9 < x< +10^9
int max=Integer.MIN_VALUE

Wrapper classes in core java

1<x<10^9

min value 
min=Integer.maxvalue

x<min
  min=x

System.out.println(Integer.MAX_VALUE);
System.out.println(Integer.MIN_VALUE);


https://www.hackerrank.com/challenges/java-loops-i/problem?isFullScreen=true		
https://www.hackerrank.com/challenges/java-loops/problem?isFullScreen=true