testcases:
  - name: "testcase 1"
    inputs:
    - 1 : [1, 2, 3, 4, 5]
    - 2 : 2
    output: 
    - 1 : [2,1,4,3,5]
  - name: "testcase 2"
    inputs:
    - 1: [3, 4, 5, 6, 2, 8, 7, 7]
    - 2 : 3
    output:
    - 1 : [5,4,3,8,2,6,7,7]
  - name: "testcase 3"
    inputs:
    - 1: [1,2,3,4,5]
    - 2 : 1
    output:
    - 1 : [1,2,3,4,5]
  - name: "testcase 4"
    inputs:
    - 1: [1,2,3,4,5,6,7]
    - 2 : 3
    output:
    - 1 : [3,2,1,6,5,4,7]
  - name: "testcase 5"
    inputs:
    - 1: [1,2,3,4,5,6,7]
    - 2 : 7
    output:
    - 1 : [7,6,5,4,3,2,1]