@@ -85,7 +85,21 @@ int GetTrappingRainWater(int[] elevationMap)
8585 return waterToDrop ;
8686 }
8787
88- [ Test ]
88+ int [ ] GetProductofArrayExceptSelf ( int [ ] inputArray )
89+ {
90+ if ( inputArray == null || inputArray . Length == 0 )
91+ throw new ArgumentNullException ( "inputArray needs to have elements" ) ;
92+ var outputArray = new List < int > ( ) ;
93+ for ( int index = 0 ; index < inputArray . Length ; index ++ )
94+ {
95+ outputArray . Add ( inputArray
96+ . Where ( element => element != inputArray [ index ] )
97+ . Aggregate ( ( firstElement , secondElement ) => firstElement * secondElement ) ) ;
98+ }
99+ return outputArray . ToArray ( ) ;
100+ }
101+ 102+ [ Test ]
89103 public void RemoveDuplicatesFromSortedArray_1 ( )
90104 {
91105 var sortedArrayWithDuplicates = new int [ ] { 1 , 3 , 3 , 6 , 8 , 8 , 9 } ;
@@ -140,5 +154,16 @@ public void TrappingRainWater_6()
140154
141155 Assert . AreEqual ( expectedValue , rainWaterValue ) ;
142156 }
157+ 158+ [ Test ]
159+ public void ProductofArrayExceptSelf_7 ( )
160+ {
161+ var inputArray = new int [ ] { 1 , 2 , 3 , 4 } ;
162+ var expectedArray = new int [ ] { 24 , 12 , 8 , 6 } ;
163+ 164+ var outputArray = GetProductofArrayExceptSelf ( inputArray ) ;
165+ 166+ Assert . AreEqual ( expectedArray , outputArray ) ;
167+ }
143168 }
144169}
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