Commit af042da

author

Sandy

authored

Merge pull request #190 from openset/develop

Add: Monotonic Array

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Lines changed: 12 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -1 +1,13 @@`
`1`	`1`	`package monotonic_array`
	`2`	`+`
	`3`	`+func isMonotonic(A []int) bool {`
	`4`	`+ increasing, decreasing := true, true`
	`5`	`+ for i, v := range A[1:] {`
	`6`	`+ if v > A[i] {`
	`7`	`+ decreasing = false`
	`8`	`+ } else if v < A[i] {`
	`9`	`+ increasing = false`
	`10`	`+ }`
	`11`	`+ }`
	`12`	`+ return increasing \|\| decreasing`
	`13`	`+}`

Lines changed: 42 additions & 0 deletions

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