onboarding tasks

task2_coding_exercises/q1_arrays.py

@@ -15,9 +15,10 @@ def find_min_index(arr: list[int]) -> int:
  @param array of integers
  @returns integer index of minimum integer
  """
-
+ 
  # insert code here
- pass
+ m = min(arr)
+ return arr.index(m)
 
 
 def reverse_str_arr(s: str) -> list[str]:
@@ -30,9 +31,10 @@ def reverse_str_arr(s: str) -> list[str]:
  @param string
  @returns array of characters
  """
-
- # insert code here
- pass
+ l = []
+ for x in reversed(s):
+ l.append(x)
+ return l
 
 
 def most_freq_element(arr: list[int]) -> int:
@@ -48,5 +50,12 @@ def most_freq_element(arr: list[int]) -> int:
  @returns integer value that appears the most frequently in the array
  """
 
- # insert code here
- pass
+ s = set(arr)
+ m = 0
+ for i in s:
+ temp = arr.count(i)
+ if temp > m:
+ m = temp
+ el = i
+
+ return el

task2_coding_exercises/q2_debugging.py

@@ -19,12 +19,17 @@ def adjacent_subtraction(arr: list[int]):
  @returns array of integers or None
  """
  results = []
- for i in range(len(arr)):
+ for i in range(len(arr) - 1):
  first = arr[i]
  second = arr[i + 1]
  results.append(second - first)
 
- return results
+ if len(arr) == 1:
+ return arr
+ elif len(arr) == 0:
+ return None
+ else:
+ return results
 
 
 def str_math(arr: list[str]):
@@ -42,8 +47,10 @@ def str_math(arr: list[str]):
  total = 0
  for s in arr:
  try:
- total += int(s)
+ total += float(s)
  except:
  pass
-
- return total
+ if arr:
+ return total
+ else:
+ return None

task2_coding_exercises/q3_data_science.py

@@ -8,3 +8,23 @@
 """
 
 # Your code here
+import pandas as pd
+from matplotlib import pyplot as plt
+import matplotlib.transforms as mtransforms 
+
+
+df = pd.read_csv('q3_test_data.csv')
+df.ffill()
+plt.plot(df['0.1'])
+plt.savefig("plot_1.jpg")
+plt.clf()
+plt.plot(df['0.2'])
+plt.savefig("plot_2.jpg")
+plt.clf()
+plt.plot(df['0.3'])
+plt.savefig("plot_3.jpg")
+plt.clf()
+plt.plot(df['1'])
+plt.yscale('log')
+plt.savefig("plot_4.jpg")
+plt.clf()