probability_bit.js

probability_bit.js

function make_bit(p) {
    if(p > 0) {
        return (Math.random() / p) > 1.0);
    } else {
        return 0;
    }
}

function make_bits(number_of_bits) {
    var bits = [];
    for(var i = 0; i <= number_of_bits; i++) {
        bits.push(make_bit( parseFloat(i) / parseFloat(number_of_bits) ));
    }
    return bits;
}

probability_bit_2.js

/*
   0001 = 1
   0010 = 2
   0011 = 3
   0100 = 4
 + 0101 = 5
----------------
   1111 = 15
*/

function make_bit(p) {
    if(p > 0) {
        cond = ((Math.random() / p) > 1.0);
    } else {
        cond = true;
    }

    return !cond;
}

function convert_bit(d) {
    return (d == false) ? 0 : 1;
}


var stats = {}

for(var i = 0; i < 100000; i++) {
    var bits = [convert_bit(make_bit(0/5)), convert_bit(make_bit(2/5)), convert_bit(make_bit(2/5)), convert_bit(make_bit(3/5))];
    var binary = bits.join("");
    var num = parseInt(binary, 2);

    console.log(binary + " = " + num);

    if(num in stats) {
        stats[num]++;
    } else {
        stats[num] = 1;
    }
}

console.log(JSON.stringify(stats));