pairElement("ATCGA")
should return [["A","T"],["T","A"],["C","G"],["G","C"],["A","T"]]
.
testString: assert.deepEqual(pairElement("ATCGA"),[["A","T"],["T","A"],["C","G"],["G","C"],["A","T"]]);
- text: pairElement("TTGAG")
should return [["T","A"],["T","A"],["G","C"],["A","T"],["G","C"]]
.
testString: assert.deepEqual(pairElement("TTGAG"),[["T","A"],["T","A"],["G","C"],["A","T"],["G","C"]]);
- text: pairElement("CTCTA")
should return [["C","G"],["T","A"],["C","G"],["T","A"],["A","T"]]
.
testString: assert.deepEqual(pairElement("CTCTA"),[["C","G"],["T","A"],["C","G"],["T","A"],["A","T"]]);
```