Add solution and test-cases for problem 3397 · 6boris/awesome-golang-algorithm@4bea707

Test Solutions: leetcode/101-200/0115.Distinct-Subsequences/Solution_test.go#L36

ExampleSolution refers to unknown identifier: Solution

Test Solutions: leetcode/401-500/0412.Fizz-Buzz/Solution_test.go#L51

ExampleSolution refers to unknown identifier: Solution

Test Solutions: leetcode/701-800/0703.Kth-Largest-Element-in-a-Stream/Solution_test.go#L23

ExampleSolution refers to unknown identifier: Solution

Test Solutions: leetcode/201-300/0203.Remove-Linked-List-Elements/Solution_test.go#L51

ExampleSolution refers to unknown identifier: Solution

Test Solutions: leetcode/901-1000/0901.Online-Stock-Span/Solution_test.go#L37

ExampleSolution refers to unknown identifier: Solution

Test Solutions: leetcode/601-700/0628.Maximum-Product-of-Three-Numbers/Solution_test.go#L60

ExampleSolution refers to unknown identifier: Solution

Test Solutions: leetcode/301-400/0300.Longest-Increasing-Subsequence/Solution_test.go#L57

ExampleSolution refers to unknown identifier: Solution

Test Solutions: leetcode/601-700/0621.Task-Scheduler/Solution_test.go#L37

ExampleSolution refers to unknown identifier: Solution

Test Solutions: leetcode/101-200/0111.Minimum-Depth-of-Binary-Tree/Solution_test.go#L48

ExampleSolution refers to unknown identifier: Solution

Test Solutions: leetcode/601-700/0611.Valid-Triangle-Number/Solution_test.go#L36

ExampleSolution refers to unknown identifier: Solution

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