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72 lines
1.3 KiB
72 lines
1.3 KiB
package main |
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import ( |
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"./student" |
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"github.com/01-edu/public/go/lib" |
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) |
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func trimAtoi(s string) int { |
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runes := []rune(s) |
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for i := range s { |
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runes[i] = rune(s[i]) |
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} |
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var numbers []rune |
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for _, r := range runes { |
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if (r >= '0' && r <= '9') || (len(numbers) == 0 && (r) == '-' || r == '+') { |
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numbers = append(numbers, r) |
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} |
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} |
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if len(numbers) == 0 || (len(numbers) == 1 && (numbers[0] == '-' || numbers[0] == '+')) { |
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return 0 |
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} |
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res, i, sign := 0, 0, 1 |
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if numbers[0] == '-' { |
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sign = -1 |
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i++ |
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} else if numbers[0] == '+' { |
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i++ |
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} |
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for ; i < len(numbers); i++ { |
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res = res*10 + int(numbers[i]) - '0' |
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} |
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return sign * res |
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} |
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func stringsToTrimAtoi(a []string) []string { |
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alpha := "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789012345678901234567890123456789" |
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for index := 0; index < 4; index++ { |
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s := "" |
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s += lib.RandStr(lib.RandIntBetween(0, 2), alpha) |
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x := lib.RandIntBetween(0, 14) |
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if x <= 4 { |
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s += "-" |
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} |
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s += lib.RandStr(lib.RandIntBetween(0, 10), alpha) |
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a = append(a, s) |
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} |
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return a |
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} |
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func main() { |
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a := []string{ |
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"", |
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"12345", |
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"str123ing45", |
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"012 345", |
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"Hello World!", |
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"sd+x1fa2W3s4", |
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"sd-x1fa2W3s4", |
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"sdx1-fa2W3s4", |
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lib.RandAlnum(), |
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} |
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a = stringsToTrimAtoi(a) |
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for _, elem := range a { |
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lib.Challenge("TrimAtoi", student.TrimAtoi, trimAtoi, elem) |
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} |
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} |
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// TODO: refactor, including the subject
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