create 0179 in go, js, ruby

Author: Mohammed785

go/0179-largest-number.go

@@ -0,0 +1,8 @@
+func largestNumber(nums []int) string {
+    ans, s := "", make([]string, len(nums))
+    for i, num := range nums { s[i] = strconv.Itoa(num) }
+    sort.Slice(s, func(a, b int) bool { return s[a] + s[b] > s[b] + s[a] })
+    if s[0] == "0" { return "0" }
+    for _, v := range s { ans += v }
+    return ans
+}

javascript/0179-largest.number.js

@@ -0,0 +1,11 @@
+/**
+ * @param {number[]} nums
+ * @return {string}
+ */
+var largestNumber = function (nums) {
+    let largest = nums
+        .map((n) => n.toString())
+        .sort((x, y) => y + x - (x + y))
+        .join('');
+    return largest[0] === '0' ? '0' : largest;
+};

ruby/0179-largest-number.rb

@@ -0,0 +1,5 @@
+# @param {Integer[]} nums
+# @return {String}
+def largest_number(nums)
+  nums.sort! {|a, b| b.to_s + a.to_s <=> a.to_s + b.to_s}.join.to_i.to_s
+end