Create 2165-smallest-value-of-the-rearranged-number.js

Author: everthis

2165-smallest-value-of-the-rearranged-number.js

@@ -0,0 +1,20 @@
+/**
+ * @param {number} num
+ * @return {number}
+ */
+var smallestNumber = function(num) {
+    const minus = num < 0
+    const nums = Math.abs(num)
+      .toString()
+      .split('')
+      .map(_ => parseInt(_))
+      .sort((a, b) => minus ? b-a : a-b);
+    if(!minus && nums[0] === 0) {
+        let i = 0
+        while(nums[i] === 0 && i < nums.length-1) i++
+        nums[0] = nums[i]
+        nums[i] = 0
+    }
+    const answer = parseInt(nums.map(_ => _.toString()).join(''))
+    return minus ? -answer : answer
+};