public void BackspaceCompareTest() { var s = new Solution(); Assert.True(s.BackspaceCompare("ab#c", "ad#c")); // true, "ac" Assert.True(s.BackspaceCompare("ab##", "c#d#")); // true, "" Assert.True(s.BackspaceCompare("a##c", "#a#c")); // true, "c" Assert.False(s.BackspaceCompare("a#c", "b")); // false, "c" > "b" }