Commit 9b2de2f

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Sandy

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Merge pull request #220 from openset/develop

Add: Min Cost Climbing Stairs

2 parents b3df9d6 + f7a31a2 commit 9b2de2fCopy full SHA for 9b2de2f

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Lines changed: 16 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -1 +1,17 @@`
`1`	`1`	`package min_cost_climbing_stairs`
	`2`	`+`
	`3`	`+func minCostClimbingStairs(cost []int) int {`
	`4`	`+ f1, f2, l := 0, 0, len(cost)-1`
	`5`	`+ for i := l; i >= 0; i-- {`
	`6`	`+ f0 := f1`
	`7`	`+ if f2 < f1 {`
	`8`	`+ f0 = f2`
	`9`	`+ }`
	`10`	`+ f0 += cost[i]`
	`11`	`+ f1, f2 = f0, f1`
	`12`	`+ }`
	`13`	`+ if f1 <= f2 {`
	`14`	`+ return f1`
	`15`	`+ }`
	`16`	`+ return f2`
	`17`	`+}`

Lines changed: 26 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -1 +1,27 @@`
`1`	`1`	`package min_cost_climbing_stairs`
	`2`	`+`
	`3`	`+import "testing"`
	`4`	`+`
	`5`	`+type caseType struct {`
	`6`	`+ input []int`
	`7`	`+ expected int`
	`8`	`+}`
	`9`	`+`
	`10`	`+func TestMinCostClimbingStairs(t *testing.T) {`
	`11`	`+ tests := [...]caseType{`
	`12`	`+ {`
	`13`	`+ input: []int{10, 15, 20},`
	`14`	`+ expected: 15,`
	`15`	`+ },`
	`16`	`+ {`
	`17`	`+ input: []int{1, 100, 1, 1, 1, 100, 1, 1, 100, 1},`
	`18`	`+ expected: 6,`
	`19`	`+ },`
	`20`	`+ }`
	`21`	`+ for _, tc := range tests {`
	`22`	`+ output := minCostClimbingStairs(tc.input)`
	`23`	`+ if output != tc.expected {`
	`24`	`+ t.Fatalf("input: %v, output: %v, expected: %v", tc.input, output, tc.expected)`
	`25`	`+ }`
	`26`	`+ }`
	`27`	`+}`

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