Codingbat Update

list-1/first_last6.py

@@ -1,6 +1,12 @@
 def first_last6(nums):
     """Given an array of ints, return True if 6 appears as either the first or last element in the array. The array will be length 1 or more."""
-    return nums[0] == 6 or nums[-1] == 6
+    if nums[0] == 6: 
+        return True
+    elif nums[-1] ==6:
+        return True
+    else:
+        return False
+    #return nums[0] == 6 or nums[-1] == 6
 
 
 print(first_last6([1, 2, 6]))

list-2/count_evens.py

@@ -10,6 +10,7 @@ def count_evens(nums):
     return evens
 
 
+
 print(count_evens([2, 1, 2, 3, 4]))
 print(count_evens([2, 2, 0]))
 print(count_evens([1, 3, 5]))

test.py

@@ -0,0 +1,7 @@
+lst = []
+num = int(input("Enter the size of the array: "))
+print("Enter array elements: ")
+for n in range(num):
+  numbers = int(input())
+  lst.append(numbers)
+print("Sum:", sum(lst))

warmup-1/diff21.py

@@ -0,0 +1,16 @@
+from math import sqrt
+def diff21(number):
+    if number >= 21:
+        answer = number - 21
+        answer = sqrt(answer ** 2)
+        print (answer)
+    elif number < 21:
+        answer = number - 21
+        answer = 2 * (sqrt(answer ** 2))
+        print (answer)
+    else:
+        print ("Error")
+
+diff21(19)
+diff21(10)
+diff21(21)

warmup-1/front.py

@@ -0,0 +1,6 @@
+def front3 (word):
+    print(f'{word[0]}{word[1]}{word[2]}{word[0]}{word[1]}{word[2]}{word[0]}{word[1]}{word[2]}')
+
+front3('Java')
+front3('Chocolate')
+front3('abc')

warmup-1/front_back.py

@@ -0,0 +1,11 @@
+def front_back(word):
+    word = list(word)
+    word = word[0]
+    word1 = word[-1]
+    final_word = word.replace(word[0], word[-1])
+    final2_word = final_word.join(word1)
+    print (final_word)
+
+front_back('code')
+front_back('a')
+front_back('ab')

warmup-1/makes10.py

@@ -0,0 +1,11 @@
+def makes10(num1, num2):
+    if num1 == 10 or num2 == 10:
+        print (True)
+    elif num1 + num2 == 10:
+        print (True)
+    else:
+        print (False)
+
+makes10(9, 10)
+makes10(9, 9)
+makes10(1, 9)

warmup-1/missing_char.py

@@ -0,0 +1,7 @@
+def missing_char(word, num):
+    final_word = word.replace(word[num],"")
+    print(final_word)
+
+missing_char('kitten', 1)
+missing_char('kitten', 0)
+missing_char('kitten', 4)

warmup-1/monkey_trouble.py

@@ -0,0 +1,11 @@
+def monkey_trouble(input1, input2):
+    if input1 == input2: 
+        print ("True")
+    else: 
+        print ("False")
+
+
+
+monkey_trouble(True, True)
+monkey_trouble(False, False)
+monkey_trouble(True, False)

warmup-1/near_hundred.py

@@ -0,0 +1,14 @@
+"Given an int n, return True if it is within 10 of 100 or 200. Note: abs(num) computes the absolute value of a number."
+
+def near_hundred(num):
+    if num in range(90, 110):
+        print ("True")
+    elif num in range(190, 210):
+        print ("True")
+    else: 
+        print ("False")
+
+
+near_hundred(93)
+near_hundred(90)
+near_hundred(89)

warmup-1/not_string.py

@@ -0,0 +1,10 @@
+def not_string(word):
+    if 'not' in word:
+        print (word)
+    else:
+        print ('not ' + word)
+
+
+not_string('candy')
+not_string('x')
+not_string('not bad')

warmup-1/parrot_trouble.py

@@ -0,0 +1,14 @@
+def parrot_trouble(input, num):
+    if input == True:
+        if num in range(20, 24):
+            print (True)
+        elif num in range(0, 7):
+            print (True)
+        else:
+            print (False)
+    else:
+        print (False)
+
+parrot_trouble(True, 6)
+parrot_trouble(True, 7)
+parrot_trouble(False, 6)

warmup-1/pos_neg.py

@@ -0,0 +1,24 @@
+
+def pos_neg(num1, num2, input):
+    if input == False:
+        if num1 == -abs(num1):
+            if num2 == abs(num2):
+                print (True)
+            else: 
+                print (False)
+        elif num1 == abs(num1):
+            if num2 == -abs(num2):
+                print (True)
+            else:
+                print (False)
+    elif input == True:
+        if num1 == -abs(num1) and num2 == -abs(num2):
+            print (True)
+        else:
+            print (False)
+
+
+pos_neg(1, -1, False)
+pos_neg(-1, 1, False)
+pos_neg(-4, -5, True)
+

warmup-1/sleep_in.py

@@ -1,10 +1,9 @@
 def sleep_in(weekday, vacation):
     """The parameter weekday is True if it is a weekday, and the parameter vacation is True if we are on vacation. We sleep in if it is not a weekday or we're on vacation.
-
     Return True if we sleep in."""
     return not weekday or vacation
 
 
 print(sleep_in(False, False))
 print(sleep_in(True, False))
-print(sleep_in(False, True))
+print(sleep_in(False, True))

warmup-1/sum_double.py

@@ -0,0 +1,11 @@
+def sum_double(num1, num2):
+    if num1 == num2: 
+        final_value = (num1 + num2) * 2
+        print (final_value)
+    else:
+        final_value = num1 + num2
+        print (final_value)
+
+sum_double(1, 2)
+sum_double(3, 2)
+sum_double(2, 2)

warmup-2/array_front9.py

@@ -0,0 +1,11 @@
+def array_front9(array):
+    #total = sum(array[:4])
+    #print (total)
+    if 9 in array[0:4]:
+        print (True)
+    else: 
+        print (False)
+
+array_front9([1, 2, 9, 3, 4]) 
+array_front9([1, 2, 3, 4, 9]) 
+array_front9([1, 2, 3, 4, 5]) 

warmup-2/front_times.py

@@ -0,0 +1,8 @@
+def front_times(word, num):
+    new_word = word[0] + word[1] + word[2]
+    new_word = new_word * num 
+    print(new_word)
+
+front_times('Chocolate', 2)
+front_times('Chocolate', 3)
+front_times('Abc', 3)

warmup-2/string_splosion.py

@@ -0,0 +1,10 @@
+def string_splosion(word):
+    num = len(word) 
+    final_word = ""
+    for i in range(num):
+        final_word = final_word + word[:i+1]
+    print (final_word)
+
+string_splosion('Code')
+string_splosion('abc')
+string_splosion('ab')