Merge pull request soapyigu#357 from mertlsarac/master

updated solution for multiplyStrings
12207480 · Oct 18, 2022 · 2d0166c · 2d0166c
2 parents 89640c0 + d8bcc6f
commit 2d0166c
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/String/MultiplyStrings.swift b/String/MultiplyStrings.swift
@@ -18,12 +18,12 @@ class MultiplyStrings {
         // calculate product for every digit
         for (i, char1) in num1.enumerated() {
 
-            guard let digit1 = Int(String(char1)) else {
+            guard let digit1 = char1.wholeNumberValue else {
                 fatalError("Invalid Input num1")
             }
 
             for (j, char2) in num2.enumerated() {
-                guard let digit2 = Int(String(char2)) else {
+                guard let digit2 = char2.wholeNumberValue else {
                     fatalError("Invalid Input num2")
                 }
 
@@ -44,7 +44,7 @@ class MultiplyStrings {
         }
 
         // trim starting 0s
-        while !resStr.isEmpty && resStr.first! == "0" {
+        while resStr.first == "0" {
             resStr.removeFirst()
         }