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39 lines
628 B
39 lines
628 B
5 years ago
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## doppelganger
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### Instructions
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You are given 2 strings. Find out if first string contains second string. If it does, return index of the first string where second string occurs last time. If it does not contain, return "-1"
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### Expected function
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```go
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package main
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func DoppelGanger(s, substr string) int {
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}
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```
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```go
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package main
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import (
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"fmt"
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piscine ".."
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)
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func main() {
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var result int
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result = piscine.DoppelGanger("aaaaaaa", "a")
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fmt.Println(result) // 6
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result = piscine.DoppelGanger("qwerty", "t")
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fmt.Println(result) // 4
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result = piscine.DoppelGanger("a", "b")
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fmt.Println(result) // -1
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}
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```
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