Commit 9d518a4

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Sandy

authored

Merge pull request #215 from openset/develop

Add: Missing Number

2 parents 593d2c4 + 79d0376 commit 9d518a4Copy full SHA for 9d518a4

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Lines changed: 8 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -1 +1,9 @@`
`1`	`1`	`package missing_number`
	`2`	`+`
	`3`	`+func missingNumber(nums []int) int {`
	`4`	`+ sum, n := 0, len(nums)`
	`5`	`+ for _, v := range nums {`
	`6`	`+ sum += v`
	`7`	`+ }`
	`8`	`+ return (n+1)*n/2 - sum`
	`9`	`+}`

Lines changed: 30 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -1 +1,31 @@`
`1`	`1`	`package missing_number`
	`2`	`+`
	`3`	`+import "testing"`
	`4`	`+`
	`5`	`+type caseType struct {`
	`6`	`+ input []int`
	`7`	`+ expected int`
	`8`	`+}`
	`9`	`+`
	`10`	`+func TestMissingNumber(t *testing.T) {`
	`11`	`+ tests := [...]caseType{`
	`12`	`+ {`
	`13`	`+ input: []int{3, 0, 1},`
	`14`	`+ expected: 2,`
	`15`	`+ },`
	`16`	`+ {`
	`17`	`+ input: []int{0, 1, 2, 4, 5, 6},`
	`18`	`+ expected: 3,`
	`19`	`+ },`
	`20`	`+ {`
	`21`	`+ input: []int{9, 6, 4, 2, 3, 5, 7, 0, 1},`
	`22`	`+ expected: 8,`
	`23`	`+ },`
	`24`	`+ }`
	`25`	`+ for _, tc := range tests {`
	`26`	`+ output := missingNumber(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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