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"content": "<p>You are given a string <code>num</code> consisting of only digits. A string of digits is called <b>balanced </b>if the sum of the digits at even indices is equal to the sum of digits at odd indices.</p>\n\n<p>Return <code>true</code> if <code>num</code> is <strong>balanced</strong>, otherwise return <code>false</code>.</p>\n\n<p> </p>\n<p><strong class=\"example\">Example 1:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> num<span class=\"example-io\"> = "1234"</span></p>\n\n<p><strong>Output:</strong> <span class=\"example-io\">false</span></p>\n\n<p><strong>Explanation:</strong></p>\n\n<ul>\n\t<li>The sum of digits at even indices is <code>1 + 3 == 4</code>, and the sum of digits at odd indices is <code>2 + 4 == 6</code>.</li>\n\t<li>Since 4 is not equal to 6, <code>num</code> is not balanced.</li>\n</ul>\n</div>\n\n<p><strong class=\"example\">Example 2:</strong></p>\n\n<div class=\"example-block\">\n<p><strong>Input:</strong> num<span class=\"example-io\"> = "24123"</span></p>\n\n<p><strong>Output:</strong> true</p>\n\n<p><strong>Explanation:</strong></p>\n\n<ul>\n\t<li>The sum of digits at even indices is <code>2 + 1 + 3 == 6</code>, and the sum of digits at odd indices is <code>4 + 2 == 6</code>.</li>\n\t<li>Since both are equal the <code>num</code> is balanced.</li>\n</ul>\n</div>\n\n<p> </p>\n<p><strong>Constraints:</strong></p>\n\n<ul>\n\t<li><code>2 <= num.length <= 100</code></li>\n\t<li><code><font face=\"monospace\">num</font></code> consists of digits only</li>\n</ul>\n",
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