Some directories had a capital in their name [fixed]. Added a recursive factorial algorithm. (#763)

* Renaming directories
* Adding a recursive factorial algorithm

maths/absMin.py

@@ -0,0 +1,20 @@
+from Maths.abs import absVal
+def absMin(x):
+    """
+    # >>>absMin([0,5,1,11])
+    0
+    # >>absMin([3,-10,-2])
+    -2
+    """
+    j = x[0]
+    for i in x:
+        if absVal(i) < absVal(j):
+            j = i
+    return j
+
+def main():
+    a = [-3,-1,2,-11]
+    print(absMin(a))  # = -1
+
+if __name__ == '__main__':
+    main()