// Weresquirrel

var JOURNAL = [
    {"events":["carrot","exercise","weekend"],"squirrel":false},
    {"events":["bread","pudding","brushed teeth","weekend","touched tree"],"squirrel":false},
    {"events":["carrot","nachos","brushed teeth","cycling","weekend"],"squirrel":false},
    {"events":["brussel sprouts","ice cream","brushed teeth","computer","weekend"],"squirrel":false},
    {"events":["potatoes","candy","brushed teeth","exercise","weekend","dentist"],"squirrel":false},
    {"events":["brussel sprouts","pudding","brushed teeth","running","weekend"],"squirrel":false},
    {"events":["pizza","brushed teeth","computer","work","touched tree"],"squirrel":false},
    {"events":["bread","beer","brushed teeth","cycling","work"],"squirrel":false},
    {"events":["cauliflower","brushed teeth","work"],"squirrel":false},
    {"events":["pizza","brushed teeth","cycling","work"],"squirrel":false},
    {"events":["lasagna","nachos","brushed teeth","work"],"squirrel":false},
    {"events":["brushed teeth","weekend","touched tree"],"squirrel":false},
    {"events":["lettuce","brushed teeth","television","weekend"],"squirrel":false},
    {"events":["spaghetti","brushed teeth","work"],"squirrel":false},
    {"events":["brushed teeth","computer","work"],"squirrel":false},
    {"events":["lettuce","nachos","brushed teeth","work"],"squirrel":false},
    {"events":["carrot","brushed teeth","running","work"],"squirrel":false},
    {"events":["brushed teeth","work"],"squirrel":false},
    {"events":["cauliflower","reading","weekend"],"squirrel":false},
    {"events":["bread","brushed teeth","weekend"],"squirrel":false},
    {"events":["lasagna","brushed teeth","exercise","work"],"squirrel":false},
    {"events":["spaghetti","brushed teeth","reading","work"],"squirrel":false},
    {"events":["carrot","ice cream","brushed teeth","television","work"],"squirrel":false},
    {"events":["spaghetti","nachos","work"],"squirrel":false},
    {"events":["cauliflower","ice cream","brushed teeth","cycling","work"],"squirrel":false},
    {"events":["spaghetti","peanuts","computer","weekend"],"squirrel":true},
    {"events":["potatoes","ice cream","brushed teeth","computer","weekend"],"squirrel":false},
    {"events":["potatoes","ice cream","brushed teeth","work"],"squirrel":false},
    {"events":["peanuts","brushed teeth","running","work"],"squirrel":false},
    {"events":["potatoes","exercise","work"],"squirrel":false},
    {"events":["pizza","ice cream","computer","work"],"squirrel":false},
    {"events":["lasagna","ice cream","work"],"squirrel":false},
    {"events":["cauliflower","candy","reading","weekend"],"squirrel":false},
    {"events":["lasagna","nachos","brushed teeth","running","weekend"],"squirrel":false},
    {"events":["potatoes","brushed teeth","work"],"squirrel":false},
    {"events":["carrot","work"],"squirrel":false},
    {"events":["pizza","beer","work","dentist"],"squirrel":false},
    {"events":["lasagna","pudding","cycling","work"],"squirrel":false},
    {"events":["spaghetti","brushed teeth","reading","work"],"squirrel":false},
    {"events":["spaghetti","pudding","television","weekend"],"squirrel":false},
    {"events":["bread","brushed teeth","exercise","weekend"],"squirrel":false},
    {"events":["lasagna","peanuts","work"],"squirrel":true},
    {"events":["pizza","work"],"squirrel":false},
    {"events":["potatoes","exercise","work"],"squirrel":false},
    {"events":["brushed teeth","exercise","work"],"squirrel":false},
    {"events":["spaghetti","brushed teeth","television","work"],"squirrel":false},
    {"events":["pizza","cycling","weekend"],"squirrel":false},
    {"events":["carrot","brushed teeth","weekend"],"squirrel":false},
    {"events":["carrot","beer","brushed teeth","work"],"squirrel":false},
    {"events":["pizza","peanuts","candy","work"],"squirrel":true},
    {"events":["carrot","peanuts","brushed teeth","reading","work"],"squirrel":false},
    {"events":["potatoes","peanuts","brushed teeth","work"],"squirrel":false},
    {"events":["carrot","nachos","brushed teeth","exercise","work"],"squirrel":false},
    {"events":["pizza","peanuts","brushed teeth","television","weekend"],"squirrel":false},
    {"events":["lasagna","brushed teeth","cycling","weekend"],"squirrel":false},
    {"events":["cauliflower","peanuts","brushed teeth","computer","work","touched tree"],"squirrel":false},
    {"events":["lettuce","brushed teeth","television","work"],"squirrel":false},
    {"events":["potatoes","brushed teeth","computer","work"],"squirrel":false},
    {"events":["bread","candy","work"],"squirrel":false},
    {"events":["potatoes","nachos","work"],"squirrel":false},
    {"events":["carrot","pudding","brushed teeth","weekend"],"squirrel":false},
    {"events":["carrot","brushed teeth","exercise","weekend","touched tree"],"squirrel":false},
    {"events":["brussel sprouts","running","work"],"squirrel":false},
    {"events":["brushed teeth","work"],"squirrel":false},
    {"events":["lettuce","brushed teeth","running","work"],"squirrel":false},
    {"events":["candy","brushed teeth","work"],"squirrel":false},
    {"events":["brussel sprouts","brushed teeth","computer","work"],"squirrel":false},
    {"events":["bread","brushed teeth","weekend"],"squirrel":false},
    {"events":["cauliflower","brushed teeth","weekend"],"squirrel":false},
    {"events":["spaghetti","candy","television","work","touched tree"],"squirrel":false},
    {"events":["carrot","pudding","brushed teeth","work"],"squirrel":false},
    {"events":["lettuce","brushed teeth","work"],"squirrel":false},
    {"events":["carrot","ice cream","brushed teeth","cycling","work"],"squirrel":false},
    {"events":["pizza","brushed teeth","work"],"squirrel":false},
    {"events":["spaghetti","peanuts","exercise","weekend"],"squirrel":true},
    {"events":["bread","beer","computer","weekend","touched tree"],"squirrel":false},
    {"events":["brushed teeth","running","work"],"squirrel":false},
    {"events":["lettuce","peanuts","brushed teeth","work","touched tree"],"squirrel":false},
    {"events":["lasagna","brushed teeth","television","work"],"squirrel":false},
    {"events":["cauliflower","brushed teeth","running","work"],"squirrel":false},
    {"events":["carrot","brushed teeth","running","work"],"squirrel":false},
    {"events":["carrot","reading","weekend"],"squirrel":false},
    {"events":["carrot","peanuts","reading","weekend"],"squirrel":true},
    {"events":["potatoes","brushed teeth","running","work"],"squirrel":false},
    {"events":["lasagna","ice cream","work","touched tree"],"squirrel":false},
    {"events":["cauliflower","peanuts","brushed teeth","cycling","work"],"squirrel":false},
    {"events":["pizza","brushed teeth","running","work"],"squirrel":false},
    {"events":["lettuce","brushed teeth","work"],"squirrel":false},
    {"events":["bread","brushed teeth","television","weekend"],"squirrel":false},
    {"events":["cauliflower","peanuts","brushed teeth","weekend"],"squirrel":false}
  ];

function tableFor(event, journal) {
    let table = [0,0,0,0];
    for (let i = 0; i < journal.length; i++) {
        let entry = journal[i], index = 0;
        if (entry.events.includes(event)) index += 1;
        if (entry.squirrel) index += 2;
        table[index] += 1;
    }
    return table;
  }
console.log(tableFor("pizza", JOURNAL));


function phi(table) {
    return (table[3] * table[0] - table[2] * table[1]) / Math.sqrt(
        (table[2] + table[3]) *
        (table[0] + table[1]) *
        (table[1] + table[3]) *
        (table[0] + table[2]));
};
// console.log(phi([76, 9, 4, 1]));