What is reason behind the array index starting with 0??

Question

Guys please anyone can tell me the answer of above question in java
array is declare and initialize like
int a[]=new int[5];
a[0]=1;
a[1]=2;
a[2]=3;
a[3]=4;
a[4]=5;

I want reason for the why array index start from 0??

Answer 1

A quick web search returned several results, here are some of the links:

https://www.quora.com/Why-do-array-indexes-start-with-0-zero-in-many-programming-languages

http://www.answers.com/Q/Why_Array_Index_starts_from_Zero

Hth, cmiiw

Answer 2

You're welcome @Ganesh : )

Answer 3

though popular, there are languages which go by 1
ex matlab

Answer 4

Thanks lpang