public static int MissingNum(int[] maarah) {
for(int c = 1; c < maarah.Length; c++){
if(maarah[c] - maarah[c-1] > misparkolshehu){
misparkolshehu = maarah[c] - maarah[c-1];
for(int c = 1; c < maarah.Length; c++){
if(maarah[c] - maarah[c-1] == misparkolshehu){
return maarah[c] + misparkolshehu / 2;