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Create Roman to integer - Leetcode 13.go #16

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Create Roman to integer - Leetcode 13.go #16

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35 changes: 35 additions & 0 deletions Roman to Integer - Leetcode 13/Roman to integer - Leetcode 13.go
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Original file line number Diff line number Diff line change
@@ -0,0 +1,35 @@
package solution

func romanToInt(s string) int {
val := 0
prevVal := 1
for i := len(s) - 1; i >= 0; i-- {
sVal := symbolVal(s[i])
if prevVal > sVal {
val -= sVal
} else {
val += sVal
}
prevVal = sVal
}
return val
}

func symbolVal(symbol byte) int {
switch symbol {
case 'M':
return 1000
case 'D':
return 500
case 'C':
return 100
case 'L':
return 50
case 'X':
return 10
case 'V':
return 5
default:
return 1
}
}