Fix enumeration order in FFT string representation

Author: alejandroaldas

maths/radix2_fft.py

@@ -157,15 +157,15 @@ def __multiply(self):
 
     # Overwrite __str__ for print(); Shows A, B and A*B
     def __str__(self):
-        a = "A = " + " + ".join(
-            f"{coef}*x^{i}" for coef, i in enumerate(self.polyA[: self.len_A])
-        )
-        b = "B = " + " + ".join(
-            f"{coef}*x^{i}" for coef, i in enumerate(self.polyB[: self.len_B])
-        )
-        c = "A*B = " + " + ".join(
-            f"{coef}*x^{i}" for coef, i in enumerate(self.product)
-        )
+        a = "A = " + " + ".join(
+            f"{coef}*x^{i}" for i, coef in enumerate(self.polyA[: self.len_A])
+        )
+        b = "B = " + " + ".join(
+            f"{coef}*x^{i}" for i, coef in enumerate(self.polyB[: self.len_B])
+        )
+        c = "A*B = " + " + ".join(
+            f"{coef}*x^{i}" for i, coef in enumerate(self.product)
+        )
 
         return f"{a}\n{b}\n{c}"