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    copied!<p>I had written some sample code fast. Hope it makes sense:</p> <pre><code>enum SygnType { More, Less, Equal } public class Representation { public SignType sign; public int value; } public class Range { public bool infinityNegative; public bool infinityPositive; public int minValue; public int maxValue; public Range(List&lt;Representation&gt; values) { infinityNegative=true; infinityPositive=true; foreach(var value in values) { if (value.sign==SignType.More) { infinityNegative=false; if (value&gt;minValue) minValue=value; } else if (value.sign==SignType.Less) { infinityPositive=false; if (value&lt;maxValue) maxValue=value; } else if (value.sign==SignType.Equal) { infinityPositive=infinityNegative=false; minValue=maxValue=value; break; } } } public bool Overlaps(Range checkRange) { if (checkRange.infinityPositive) return CompareUpperLevelValue(checkRange); //this method should compare upper value overlapping else if (checkRange.infinityNegative) return CompareLowerLevelValue(checkRange); //this method should compare lower value overlapping else return CompareInterval(checkRange); //this method should compare interval } public bool CompareUpperLevelValue(Range checkRange) { if (checkRange.maxValue&lt;maxValue) return true; else return false } public bool CompareLowerLevelValue(Range checkRange) { if (checkRange.minValue&gt;minValue) return true; else return false } public bool CompareInterval(Range checkRange) { if ((checkRange.minValue&gt;minValue)&amp;&amp;(checkRange.maxValue&lt;maxValue)) return true; else return false; } } </code></pre>
 

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