leetcode 179

leetcode/179/179.go

@@ -0,0 +1,19 @@
+
+func largestNumber(nums []int) string {
+    sort.Slice(nums, func (i, j int) bool {
+        a, b := nums[i], nums[j]
+        aa, _ := strconv.ParseInt(fmt.Sprintf("%d%d", a, b), 10, 64)
+        bb, _ := strconv.ParseInt(fmt.Sprintf("%d%d", b, a), 10, 64)
+        return aa > bb
+    })
+
+    builder := strings.Builder{}
+    for _, num := range nums {
+        builder.WriteString(fmt.Sprintf("%d", num))
+    }
+    res := strings.TrimLeft(builder.String(), "0")
+    if len(res) == 0 {
+        res = "0"
+    }
+    return res
+}