<pre class="shiki github-dark shaku"><code>/** * @param {string} v1 * @param {string} v2 * @returns 0 | 1 | -1 */function compare(v1, v2) { // your code here let t=v2.split('.').map(item=&gt;parseInt(item)),flag=0 v1.split('.').map(item=&gt;parseInt(item)).some((item,index)=&gt;{ if(item&lt;t[index]) flag=-1 else if(item&gt;t[index]) flag=1 return item!==t[index] }) return flag}</code></pre>

parseInt

Please implement a function to compare 2 semver strings. compare('12.1.0', '12.0.9')// 1, meaning first one is greatercompare('12.1.0', '12.1.2')// -1…