Commit 919c709

author

Sandy

authored

Merge pull request #109 from openset/develop

Add: reverse_only_letters

2 parents 3553f52 + a32c85a commit 919c709Copy full SHA for 919c709

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Lines changed: 19 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -1 +1,20 @@`
`1`	`1`	`package reverse_only_letters`
	`2`	`+`
	`3`	`+import "unicode"`
	`4`	`+`
	`5`	`+func reverseOnlyLetters(S string) string {`
	`6`	`+ s := []rune(S)`
	`7`	`+ i, j := 0, len(s)-1`
	`8`	`+ for i < j {`
	`9`	`+ if !unicode.IsLetter(rune(S[i])) {`
	`10`	`+ i++`
	`11`	`+ } else if !unicode.IsLetter(rune(S[j])) {`
	`12`	`+ j--`
	`13`	`+ } else {`
	`14`	`+ s[i], s[j] = s[j], s[i]`
	`15`	`+ i++`
	`16`	`+ j--`
	`17`	`+ }`
	`18`	`+ }`
	`19`	`+ return string(s)`
	`20`	`+}`

Lines changed: 30 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -1 +1,31 @@`
`1`	`1`	`package reverse_only_letters`
	`2`	`+`
	`3`	`+import "testing"`
	`4`	`+`
	`5`	`+type caseType struct {`
	`6`	`+ input string`
	`7`	`+ expected string`
	`8`	`+}`
	`9`	`+`
	`10`	`+func TestReverseOnlyLetters(t *testing.T) {`
	`11`	`+ tests := [...]caseType{`
	`12`	`+ {`
	`13`	`+ input: "ab-cd",`
	`14`	`+ expected: "dc-ba",`
	`15`	`+ },`
	`16`	`+ {`
	`17`	`+ input: "a-bC-dEf-ghIj",`
	`18`	`+ expected: "j-Ih-gfE-dCba",`
	`19`	`+ },`
	`20`	`+ {`
	`21`	`+ input: "Test1ng-Leet=code-Q!",`
	`22`	`+ expected: "Qedo1ct-eeLg=ntse-T!",`
	`23`	`+ },`
	`24`	`+ }`
	`25`	`+ for _, tc := range tests {`
	`26`	`+ output := reverseOnlyLetters(tc.input)`
	`27`	`+ if output != tc.expected {`
	`28`	`+ t.Fatalf("input: %v, output: %v, expected: %v", tc.input, output, tc.expected)`
	`29`	`+ }`
	`30`	`+ }`
	`31`	`+}`

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