Data Structure & Algorithm (PHP description) ternary group Triplet

Data Structure & Algorithm (PHP description) ternary group Triplet /** * Ternary Group Triplet */ Class Triplet { Private $_data = null; Initialize ternary groups Public Function init ($val 1, $val 2, $val 3) { $this-_data[0] = $val 1; $this-_data[1] = $val 2; $this-_data[2] = $val 3; return true; } Destroying ternary groups Public function Destroy () { Unset ($this-_data); return true; } Returns the value of section $key Public function Get ($key) { if ($key < 1 | | $key > 3) return false; Return$this, _data[$key-1]; } Set the value of $key to $val Public function put ($key, $val) { if ($key < 1 | | $key > 3) return false; $this-_data[$key-1] = $val; return true; } Whether to sort in ascending order Public Function isascending () { Return ($this, _data[0] <= $this, _data[1]) && ($this, _data[1] <= $this, _data[2]); } Whether to sort by descending Public Function isdescending () { Return ($this, _data[0] >= $this, _data[1]) && ($this, _data[1] >= $this, _data[2]); } Get maximum Value Public Function Max () { Return ($this _data[0] >= $this, _data[1])? ($this, _data[0] >= $this, _data[2]), $this, _data[0]: $this-_data[2]: ($this, _data[1] >= $this, _data[2])? $this, _data[1]: $this, _data[2]; } Get Minimum value Public Function min () { Return ($this _data[0] <= $this, _data[1])? ($this, _data[0] <= $this, _data[2]), $this, _data[0]: $this-_data[2]: ($this, _data[1] <= $this, _data[2])? $this, _data[1]: $this, _data[2]; } } $objTriplet = new Triplet (); echo "Init:"; Var_dump ($objTriplet, init (1, 2, 3)); Echo "; echo "Get 1:"; Var_dump ($objTriplet, get (1)); Echo "; echo "Get 4:"; Var_dump ($objTriplet, get (4)); Echo "; False echo "Put 3, 4:"; Var_dump ($objTriplet, put (3, 4)); Echo "; echo "Max:"; Var_dump ($objTriplet, Max ()); Echo "; echo "min:"; Var_dump ($objTriplet-min ()); Echo "; echo "isascending:"; Var_dump ($objTriplet-isascending ()); Echo "; echo "isdescending:"; Var_dump ($objTriplet-isdescending ()); Echo "; ?> Copy Code

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