Another CharSequence.repeat implementation in JS from polyfill of String.repeat.

#KT-3064
2016-02-25 22:23:58 +03:00
parent f564adfdd4
commit 029b918ec9
1 changed files with 11 additions and 3 deletions
@@ -87,9 +87,17 @@ public fun CharSequence.repeat(n: Int): String {
        else -> {
            var result = ""
            if (!isEmpty()) {
-                val s = this.toString()
-                for (i in 1..n) {
-                    result += s
+                var s = this.toString()
+                var count = n
+                while (true) {
+                    if ((count and 1) == 1) {
+                        result += s
+                    }
+                    count = count ushr 1
+                    if (count == 0) {
+                        break
+                    }
+                    s += s
                }
            }
            return result