rings-and-rods_0307.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>rings-and-rods</title>
</head>
<body>
    
</body>
<script>
const rings = "B0B6G0R6R0R6G9";

console.log(countPoints(rings));

/**
 * @param {string} rings
 * @return {number}
 */
function countPoints(rings) {
    let ht = {}
    let count = 0;
    for(let i = 0; i < rings.length; i++) {
        let index = rings[i+1];
        ht[index] = ht[index] ? ht[index] + rings[i] : rings[i];
        console.log(ht);
        i++
    }
    for (let key in ht) {
        if(ht[key].includes('B') && ht[key].includes('G') && ht[key].includes('R')) count++
    }
    return count
};
</script>
</html>