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#Equilibrium ##Synopsis "An equilibrium index of an array is any index of that array and the sum of the lower indexes value is equal to the sum of the higher indexes value. That means if "i" is called the equilibrium index of array arr, then i should be 0 =< i =<arr.Length and arr[0]+arr[1]+.....+arr[i-1] = arr[i+1]+arr[i+2]+....+arr[arr.Length-1]."

##Code Example ###Assignment Given a zero-based integer array of length N, the equivalence index (i) is the index where the sum of all the items to the left of the index are equal to the sum of all the items to the right of the index.

###Example Output Example: Given the following array [1, 2, 3, 4, 5, 7, 8, 10, 12] the output would be "6" because 1 + 2 + 3 + 4 + 5 + 7 = 10 + 12

###Assumptions/Constraints From the instructions given, the following assumptions can be deducted from it:

• Constraints: 0 <= N <= 100 000
• If no index exists then output -1

###Code Snippet To use the equilibrium get, just call the following on the pre-created list of integers:

var input = new List<int> { 1, 2, 3, 4, 5, 7, 8, 10, 12 };
var equivalenceIndex = input.getEquilibrium();

This will yield the following for the equivalenceIndex:

equivalenceIndex = 6

##Installation To run this app, you'll need .NET 4.5 or higher installed on your machine, and to open up the project file you'll need Visual Studio. Other than that, no installation required. Microsoft .NET Framework 4.5 can be installed by downloading it from the microsoft website.

##Contributors Feel free to pop me a message or flag an issue if you come across it - I'll see what I can do about it.

##License

Copyright © 2016 Simone van Buuren

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the “Software”), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.