Commit 0037025

author

Sandy

authored

Merge pull request #202 from openset/develop

Add: Valid Mountain Array

2 parents 49cf209 + ae8ff5f commit 0037025Copy full SHA for 0037025

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Lines changed: 18 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -1 +1,19 @@`
`1`	`1`	`package valid_mountain_array`
	`2`	`+`
	`3`	`+func validMountainArray(A []int) bool {`
	`4`	`+ flag := false`
	`5`	`+ if len(A) < 3 {`
	`6`	`+ return false`
	`7`	`+ }`
	`8`	`+ for i, v := range A[1:] {`
	`9`	`+ if !flag && v <= A[i] {`
	`10`	`+ if flag = true; i == 0 {`
	`11`	`+ return false`
	`12`	`+ }`
	`13`	`+ }`
	`14`	`+ if flag && v >= A[i] {`
	`15`	`+ return false`
	`16`	`+ }`
	`17`	`+ }`
	`18`	`+ return flag`
	`19`	`+}`

Lines changed: 42 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -1 +1,43 @@`
`1`	`1`	`package valid_mountain_array`
	`2`	`+`
	`3`	`+import "testing"`
	`4`	`+`
	`5`	`+type caseType struct {`
	`6`	`+ input []int`
	`7`	`+ expected bool`
	`8`	`+}`
	`9`	`+`
	`10`	`+func TestValidMountainArray(t *testing.T) {`
	`11`	`+ tests := [...]caseType{`
	`12`	`+ {`
	`13`	`+ input: []int{2, 1},`
	`14`	`+ expected: false,`
	`15`	`+ },`
	`16`	`+ {`
	`17`	`+ input: []int{3, 5, 5},`
	`18`	`+ expected: false,`
	`19`	`+ },`
	`20`	`+ {`
	`21`	`+ input: []int{0, 3, 2, 1},`
	`22`	`+ expected: true,`
	`23`	`+ },`
	`24`	`+ {`
	`25`	`+ input: []int{1, 2, 3, 2},`
	`26`	`+ expected: true,`
	`27`	`+ },`
	`28`	`+ {`
	`29`	`+ input: []int{9, 8, 7, 6, 5, 4, 3, 2, 1, 0},`
	`30`	`+ expected: false,`
	`31`	`+ },`
	`32`	`+ {`
	`33`	`+ input: []int{1, 2, 3, 4, 5},`
	`34`	`+ expected: false,`
	`35`	`+ },`
	`36`	`+ }`
	`37`	`+ for _, tc := range tests {`
	`38`	`+ output := validMountainArray(tc.input)`
	`39`	`+ if output != tc.expected {`
	`40`	`+ t.Fatalf("input: %v, output: %v, expected: %v", tc.input, output, tc.expected)`
	`41`	`+ }`
	`42`	`+ }`
	`43`	`+}`

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