egor dyuzhev

problems.py

@@ -0,0 +1,61 @@
+vec = [[1,2,3], [4,5,6], [7,8,9]]
+def flatten (list):
+    flattened = []
+    for arr in list:
+        for item in arr:
+            flattened.append(item)
+    return flattened
+
+print(flatten(vec))
+
+
+def palindrome(word):
+    reversed_word = word[::-1]
+    return word == reversed_word
+
+print(palindrome('abba'))  # Output: True
+print(palindrome('hello'))  # Output: False
+
+
+
+def most_used(word):
+    most_common_char = max(word, key=word.count)
+    return most_common_char
+
+print(most_used('hello'))  # Output: 'l'
+
+
+
+
+def array_split(arr, split):
+    chunks = []
+    while len(arr) > 0:
+        chunks.append(arr[:split])
+        arr = arr[split:]
+    return chunks
+
+
+print(array_split([1, 2, 3, 4], 2))  # Output: [[ 1, 2], [3, 4]]
+print(array_split([1, 2, 3, 4, 5], 2))  # Output: [[ 1, 2], [3, 4], [5]]
+print(array_split([1, 2, 3, 4, 5, 6, 7, 8], 3))  # Output: [[ 1, 2, 3], [4, 5, 6], [7, 8]]
+print(array_split([1, 2, 3, 4, 5], 4))  # Output: [[ 1, 2, 3, 4], [5]]
+print(array_split([1, 2, 3, 4, 5], 10))  # Output: [[ 1, 2, 3, 4, 5]]
+
+
+
+
+
+
+
+
+import random 
+
+def random_array(arr):
+    random.shuffle(arr)
+    return(arr)
+
+
+my_arr = ['banana','orange','ketchup','lettuce']
+print(random_array(my_arr))
+
+