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Add: Excel Sheet Column Title

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Lines changed: 7 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -1 +1,8 @@`
`1`	`1`	`package excel_sheet_column_title`
	`2`	`+`
	`3`	`+func convertToTitle(n int) string {`
	`4`	`+ if n < 27 {`
	`5`	`+ return string(n - 1 + 'A')`
	`6`	`+ }`
	`7`	`+ return convertToTitle((n-1)/26) + string((n-1)%26+'A')`
	`8`	`+}`

Lines changed: 54 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -1 +1,55 @@`
`1`	`1`	`package excel_sheet_column_title`
	`2`	`+`
	`3`	`+import "testing"`
	`4`	`+`
	`5`	`+type caseType struct {`
	`6`	`+ input int`
	`7`	`+ expected string`
	`8`	`+}`
	`9`	`+`
	`10`	`+func TestConvertToTitle(t *testing.T) {`
	`11`	`+ tests := [...]caseType{`
	`12`	`+ {`
	`13`	`+ input: 1,`
	`14`	`+ expected: "A",`
	`15`	`+ },`
	`16`	`+ {`
	`17`	`+ input: 3,`
	`18`	`+ expected: "C",`
	`19`	`+ },`
	`20`	`+ {`
	`21`	`+ input: 26,`
	`22`	`+ expected: "Z",`
	`23`	`+ },`
	`24`	`+ {`
	`25`	`+ input: 52,`
	`26`	`+ expected: "AZ",`
	`27`	`+ },`
	`28`	`+ {`
	`29`	`+ input: 27,`
	`30`	`+ expected: "AA",`
	`31`	`+ },`
	`32`	`+ {`
	`33`	`+ input: 28,`
	`34`	`+ expected: "AB",`
	`35`	`+ },`
	`36`	`+ {`
	`37`	`+ input: 701,`
	`38`	`+ expected: "ZY",`
	`39`	`+ },`
	`40`	`+ {`
	`41`	`+ input: 703,`
	`42`	`+ expected: "AAA",`
	`43`	`+ },`
	`44`	`+ {`
	`45`	`+ input: 16900,`
	`46`	`+ expected: "XYZ",`
	`47`	`+ },`
	`48`	`+ }`
	`49`	`+ for _, tc := range tests {`
	`50`	`+ output := convertToTitle(tc.input)`
	`51`	`+ if output != tc.expected {`
	`52`	`+ t.Fatalf("input: %v, output: %v, expected: %v", tc.input, output, tc.expected)`
	`53`	`+ }`
	`54`	`+ }`
	`55`	`+}`

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