From 45511aaaa4e7151a5f9369fa56c2f43b5403e559 Mon Sep 17 00:00:00 2001
From: Pin Lin <moneycat711@gmail.com>
Date: Wed, 6 May 2020 09:26:22 +0800
Subject: [PATCH] =?UTF-8?q?=E9=87=8D=E6=A7=8B=E5=8E=BB=E9=99=A4=E8=B2=A0?=
 =?UTF-8?q?=E8=99=9F?=
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---
 AndroidCalculator/Calculator.swift | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/AndroidCalculator/Calculator.swift b/AndroidCalculator/Calculator.swift
index 2c528a2..74be81f 100644
--- a/AndroidCalculator/Calculator.swift
+++ b/AndroidCalculator/Calculator.swift
@@ -106,7 +106,9 @@ class Calculator {
         formula.append("0")
       }
       if formula.last!.firstIndex(of: "-") != nil {
-        formula.append(String(formula.popLast()!.split(separator: "-")[0]))
+        var number = formula.popLast()!
+        number.removeFirst()
+        formula.append(number)
       } else {
         formula.append("-" + formula.popLast()!)
       }