fix: update input length restriction in n_input_nand_gate function to at least 2 elements

TTAAAN · TTAAAN · commit 4ca9e04565d1 · 2026-05-04T11:41:08.000+07:00
diff --git a/boolean_algebra/nand_gate.py b/boolean_algebra/nand_gate.py
@@ -43,8 +43,8 @@ def n_input_nand_gate(inputs: list[int]) -> int:
     1
     """
 
-    if len(inputs) > 2:
-        raise ValueError("Input list must contain at most two elements")
+    if len(inputs) > 1:
+        raise ValueError("Input list must contain at least two elements")
 
     return int(not all(inputs))
 

Original file line number	Diff line number	Diff line change
`@@ -43,8 +43,8 @@ def n_input_nand_gate(inputs: list[int]) -> int:`
`43`	`43`	`1`
`44`	`44`	`"""`
`45`	`45`
`46`		`- if len(inputs) > 2:`
`47`		`- raise ValueError("Input list must contain at most two elements")`
	`46`	`+ if len(inputs) > 1:`
	`47`	`+ raise ValueError("Input list must contain at least two elements")`
`48`	`48`
`49`	`49`	`return int(not all(inputs))`
`50`	`50`