function repeat(str, count) { return count < 0 ? ‘‘ : (new Array(count)).join(str); } function diamond(sign, size) { var d, s = ‘‘ for (var i = 0; i < size*2; i++) { d = Math.abs(size-i-1); console.log(d+1, 2*(size-d)); s += repeat(‘ ‘, d+1) + repeat(sign, 2*(size-d)) + repeat(‘ ‘, d+1) + ‘<br/>‘; }; document.write(s); } diamond(‘A‘, 5);
时间: 2024-10-06 00:38:55