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Add: Add Strings #654

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Merged
awesee merged 2 commits into from
Sep 18, 2019
Merged

Add: Add Strings #654

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4e75430
Add: Add Strings
Sep 18, 2019
92cf8ea
Update: Add Binary
Sep 18, 2019
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Update: Add Binary
  • Loading branch information
openset committed Sep 18, 2019
commit 92cf8ea4c802b8aa27c285e6beeb5b32827fdcd9
24 changes: 11 additions & 13 deletions problems/add-binary/add_binary.go
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Original file line number Diff line number Diff line change
@@ -1,22 +1,20 @@
package add_binary
package problem_67

func addBinary(a string, b string) string {
i, j := len(a)-1, len(b)-1
var carry byte = '0'
var bs []byte
for i >= 0 || j >= 0 || carry != '0' {
ans, l1, l2, carry := "", len(a)-1, len(b)-1, byte('0')
for l1 >= 0 || l2 >= 0 || carry != '0' {
v := carry
if i >= 0 {
v += a[i] - '0'
i--
if l1 >= 0 {
v += a[l1] - '0'
l1--
}
if j >= 0 {
v += b[j] - '0'
j--
if l2 >= 0 {
v += b[l2] - '0'
l2--
}
carry = '0' + (v-'0')/2
v = '0' + (v-'0')%2
bs = append([]byte{v}, bs...)
ans = string(v) + ans
}
return string(bs)
return ans
}
2 changes: 1 addition & 1 deletion problems/add-binary/add_binary_test.go
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Original file line number Diff line number Diff line change
@@ -1,4 +1,4 @@
package add_binary
package problem_67

import "testing"

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