day 3 pairs of two lists

day3_pairs_of_two_lists.py

@@ -0,0 +1,18 @@
+# Required concepts: https://www.w3schools.com/python/python_intro.asp strings
+
+print('Question: for sets A and B return all pairs {A(i) , B(-i)}')
+
+
+l1 = ["hi","hello","bye"]
+l2 = ["shivam",'raj','roy']
+
+for i in range(len(l1)):
+    print(l1[i]+" "+l2[-(i+1)])
+    # match first element of l1,
+    # with last element of l2
+
+#single line
+res = [(l1[i],l2[-i-1]) for i in range(len(l1))]
+
+print('Answer:')
+print(res)

day3_reverse_each_word.py

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+# Required concepts: https://www.w3schools.com/python/python_intro.asp Everything till for loops
+
+print('Question: reverse each word of string')
+
+sentence = 'hello world how are     you'
+res = ''
+
+# what to reverse?
+# reverse upto the space
+left = 0
+while left < len(sentence):
+  right = sentence.find(' ',left)
+  if right == -1:
+    right = len(sentence)
+  word = sentence[left:right]
+  # now add this reversed word to result!
+  print(res)
+  res += word[::-1]
+  left = right
+  #now start from here
+
+print('Answer:')
+print(res)
+

main.py

@@ -1,18 +1,18 @@
-# Required concepts: https://www.w3schools.com/python/python_intro.asp lists
+# Required concepts: https://www.w3schools.com/python/python_intro.asp strings
 
-print('Question: simulate game where raj can pick the chocolate from either edge of list, he will always pick the bigger one')
+print('Question: for sets A and B return all pairs {A(i) , B(-i)}')
 
-chocolates = [1,3,4,5,6]
 
-while len(chocolates) > 1:
-  #check who is bigger first or last?
-  if chocolates[0] > chocolates[-1]:
-    # what if first is bigger?
-    eat = chocolates.pop(0)
-  else:
-    eat = chocolates.pop()
-  print('Eating ',eat)
+l1 = ["hi","hello","bye"]
+l2 = ["shivam",'raj','roy']
 
-print('Answer:')
-print('Left with chocolate',chocolates[0])
+for i in range(len(l1)):
+    print(l1[i]+" "+l2[-(i+1)])
+    # match first element of l1,
+    # with last element of l2
+
+#single line
+res = [(l1[i],l2[-i-1]) for i in range(len(l1))]
 
+print('Answer:')
+print(res)