Added getSum and getProd functions for arrays

CSClasses/Algorithms.cs

@@ -23,6 +23,7 @@ Copyright (C) 2020  Matthew Ellison
 
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Numerics;
 
 
@@ -459,5 +460,40 @@ namespace mee{
 			primes.Sort();
 			return primes;
 		}
+		//These functions get a value from combining elements in an array
+		public static int getSum(List<int> ary){
+			return ary.Sum();
+		}
+		public static long getSum(List<long> ary){
+			return ary.Sum();
+		}
+		public static BigInteger getSum(List<BigInteger> ary){
+			BigInteger sum = 0;
+			foreach(BigInteger num in ary){
+				sum += num;
+			}
+			return sum;
+		}
+		public static int getProd(List<int> ary){
+			int prod = 1;
+			foreach(int num in ary){
+				prod *= num;
+			}
+			return prod;
+		}
+		public static long getProd(List<long> ary){
+			long prod = 1;
+			foreach(long num in ary){
+				prod *= num;
+			}
+			return prod;
+		}
+		public static BigInteger getProd(List<BigInteger> ary){
+			BigInteger prod = 1;
+			foreach(BigInteger num in ary){
+				prod *= num;
+			}
+			return prod;
+		}
 	}
 }