commit helloworld first time

steven.chen3 · steven.chen3 · commit a564f393ca55 · 2022-10-22T02:09:52.000-07:00
diff --git a/helloworld/child1/__init__.py b/helloworld/child1/__init__.py
diff --git a/helloworld/child1/sub/__init__.py b/helloworld/child1/sub/__init__.py
diff --git a/helloworld/child1/sub/utils.py b/helloworld/child1/sub/utils.py
@@ -0,0 +1,11 @@
+
+def add(a: int, b: int) -> int:
+    return a + b
+
+
+def sub(a: int, b: int) -> int:
+    return a - b
+
+
+if __name__ == '__main__':
+    print('This is utils')
diff --git a/helloworld/ex_grade_10.py b/helloworld/ex_grade_10.py
@@ -0,0 +1,14 @@
+tip = 'Please input a grade: '
+str_grade = input(tip)
+grade = int(str_grade)
+
+if grade < 0 or grade > 100:
+    print("Invalid grade")
+elif grade <= 59:
+    print('Not pass')
+elif grade <= 75:
+    print('Pass')
+elif grade <= 85:
+    print('Good')
+else:
+    print("Excellent")
diff --git a/helloworld/ex_list_22.py b/helloworld/ex_list_22.py
@@ -0,0 +1,40 @@
+def get_user_input() -> list:
+    result_list = []
+    while True:
+        s_grade = input("Enter a grade(type 'exit' to quit):")
+        if s_grade == 'exit':
+            break
+
+        result_list.append(int(s_grade))
+
+    return result_list
+
+
+def get_average(grade_list: list) -> float:
+    count = len(grade_list)
+
+    if count == 0:
+        return 0
+
+    total = 0
+    for g in grade_list:
+        total = total + g
+
+    return total / count
+
+
+def get_grades_above_average(grade_list: list, average: float) -> list:
+    res_list = []
+    for g in grade_list:
+        if g > average:
+            res_list.append(g)
+
+    return res_list
+
+
+grade_list = get_user_input()
+average = get_average(grade_list)
+grades_above_average = get_grades_above_average(grade_list, average)
+
+print(f'Average: {average}')
+print(f'Grades above average: {grades_above_average}')
diff --git a/helloworld/ex_recursive_19.py b/helloworld/ex_recursive_19.py
@@ -0,0 +1,33 @@
+# sample 1: print sequence
+def print_sequence(n: int):
+    print(n)
+
+    next_num = n - 1
+    if next_num > 0:
+        print_sequence(next_num)
+
+
+print_sequence(10)
+
+
+# sample 2: summary a sequence
+def summary(n):
+    if n == 1:
+        return 1
+
+    return n + summary(n - 1)
+
+
+print(summary(100))
+
+
+# sample 3: n!
+def nn(n):
+    if n == 1:
+        return 1
+
+    return n * nn(n - 1)
+
+
+print(nn(4))
+
diff --git a/helloworld/ex_sum_12.py b/helloworld/ex_sum_12.py
@@ -0,0 +1,17 @@
+tip = 'Enter number '
+s_num1 = input(tip + '1: ')
+s_num2 = input(tip + '2: ')
+
+start = int(s_num1)
+stop = int(s_num2) + 1
+
+result = 0
+for num in range(start, stop):
+    result = num + result
+
+print(f'Summary: {result}')
+
+
+# 1: num + result -> result
+# 2: num + result -> result
+# 3: num + result -> result
diff --git a/helloworld/ex_while_14.py b/helloworld/ex_while_14.py
@@ -0,0 +1,29 @@
+tip = 'Please enter a grade(type "exit" to quit): '
+
+summary = 0
+count = 0
+running = True
+while running:
+    s_grade = input(tip)
+    if s_grade == 'exit':
+        running = False
+    else:
+        grade = int(s_grade)
+
+        if grade < 0 or grade > 100:
+            print('Invalid grade')
+        else:
+            summary = summary + grade
+            count = count + 1
+
+            if grade < 59:
+                print('Not pass')
+            elif grade < 75:
+                print('Pass')
+            elif grade < 85:
+                print('Good')
+            else:
+                print("Excellent")
+
+average = summary / count
+print(f'Average: {average}')
diff --git a/helloworld/main.py b/helloworld/main.py
@@ -0,0 +1,13 @@
+import sys
+
+
+def main():
+    args = sys.argv[1:]
+
+    for arg in args:
+        print(arg)
+
+
+if __name__ == '__main__':
+    main()
+
