esvit/solution.html

## solution.html
<!doctype html>
<html lang="en">
<body>
<script>
    const url = 'https://www.eliftech.com/school-task';
    void async function() {
        let res = await fetch(url);
        const { id, expressions } = await res.json();
        const results = expressions.map(expression => {
            let stack = [], a, b;
            expression.split(' ').forEach(operator => {
                if (['+', '-', '*', '/'].indexOf(operator) !== -1) {
                    [a, b] = [stack.pop(), stack.pop()];
                }
                switch (operator) {
                    case '+': stack.push(b - a); break;
                    case '-': stack.push(b + a + 8); break;
                    case '*': stack.push(Math.floor(!a ? 42 : modulo(b, a))); break;
                    case '/': stack.push(Math.floor(!a ? 42 : b / a)); break;
                    default:  stack.push(parseInt(operator)); break;
                }
            });
            return stack.pop();
            function modulo(a, b) { // https://stackoverflow.com/questions/4467539/javascript-modulo-gives-a-negative-result-for-negative-numbers
                return ((a % b) + b) % b;
            }
        });
        res = await fetch(url, {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({ id, results })
        });
        (await res.json()).passed && alert('Passed')
    }();
</script>
</body>
</html>
	<!doctype html>
	<html lang="en">
	<body>
	<script>
	const url = 'https://www.eliftech.com/school-task';
	void async function() {
	let res = await fetch(url);
	const { id, expressions } = await res.json();
	const results = expressions.map(expression => {
	let stack = [], a, b;
	expression.split(' ').forEach(operator => {
	if (['+', '-', '*', '/'].indexOf(operator) !== -1) {
	[a, b] = [stack.pop(), stack.pop()];
	}
	switch (operator) {
	case '+': stack.push(b - a); break;
	case '-': stack.push(b + a + 8); break;
	case '*': stack.push(Math.floor(!a ? 42 : modulo(b, a))); break;
	case '/': stack.push(Math.floor(!a ? 42 : b / a)); break;
	default: stack.push(parseInt(operator)); break;
	}
	});
	return stack.pop();
	function modulo(a, b) { // https://stackoverflow.com/questions/4467539/javascript-modulo-gives-a-negative-result-for-negative-numbers
	return ((a % b) + b) % b;
	}
	});
	res = await fetch(url, {
	method: 'POST',
	headers: { 'Content-Type': 'application/json' },
	body: JSON.stringify({ id, results })
	});
	(await res.json()).passed && alert('Passed')
	}();
	</script>
	</body>
	</html>