Markov Chain circle

circle.js

// Circle
var numNodes = 10;
var a = [];
for (var i = 0; i < numNodes; ++i) {
	var b = [];
	for (var j = 0; j < numNodes; ++j) {
		b[j] = (i === (j + numNodes - 1) % numNodes) ? 1 : 0;
	}
	a[i] = b;
}
console.log(JSON.stringify(a));