All url are updated

Author: darkprinx

Status/Day_13.md

@@ -166,3 +166,5 @@ raise RuntimeError('something wrong')
 ***Well It seems that the above problems are very much focused on basic concpets and implimantation of object oriented programming.As the concepts are not about to solve any functional problem rather design the structure , so both codes are very much similar in there implimantation part.***
 
 [***go to previous day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_12.md "Day 12")
+
+[***go to next day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_13.md "Day 15")

Status/Day_14.md

@@ -149,4 +149,6 @@ print(ans)
 ```
 
 
+[***go to previous day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_11.md "Day 13")
 
+[***go to next day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_13.md "Day 15")

Status/Day_15.md

@@ -208,3 +208,7 @@ for i in range(1, n+1):
 print(round(sum, 2)) # rounded to 2 decimal point
 ```
 ---------------------
+
+[***go to previous day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_11.md "Day 14")
+
+[***go to next day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_13.md "Day 16")

Status/Day_16.md

@@ -265,3 +265,6 @@ print(",".join(resp))
 ---------------------
 
 
+[***go to previous day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_11.md "Day 15")
+
+[***go to next day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_13.md "Day 17")

Status/Day_17.md

@@ -164,3 +164,6 @@ print(rand_num)
 ---------------------
 
 
+[***go to previous day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_11.md "Day 16")
+
+[***go to next day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_13.md "Day 18")

Status/Day_18.md

@@ -142,3 +142,6 @@ print(resp)
 ---------------------
 
 
+[***go to previous day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_11.md "Day 17")
+
+[***go to next day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_13.md "Day 19")

Status/Day_19.md

@@ -166,3 +166,6 @@ for sub in subjects:
 ---------------------
 
 
+[***go to previous day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_11.md "Day 18")
+
+[***go to next day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_13.md "Day 20")

Status/Day_20.md

@@ -146,3 +146,7 @@ array = [[ [0 for col in range(8)] for col in range(5)] for row in range(3)]
 print array
 ```
 ----------------
+
+[***go to previous day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_11.md "Day 19")
+
+[***go to next day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_13.md "Day 21")

Status/Day_21.md

@@ -184,3 +184,7 @@ print aMale.getGender()
 print aFemale.getGender()
 ```
 ----------------
+
+[***go to previous day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_11.md "Day 20")
+
+[***go to next day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_13.md "Day 22")

Status/Day_22.md

@@ -188,3 +188,7 @@ solutions=solve(numheads,numlegs)
 print solutions
 ```
 ----------------
+
+[***go to previous day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_11.md "Day 21")
+
+[***go to next day***](https://github.com/darkprinx/100-plus-Python-programming-exercises-extended/blob/master/Status/Day_13.md "Day 23")