Nov 4, 2019 · Nov 4, 2019
diff --git a/allalgorithms/string/counting_valleys.py b/allalgorithms/string/counting_valleys.py
 '''
 Counting valleys deals with strings. One has to count the number of valleys and Hills in the given string and return the position of traveller at end w.r.t the start point.
 'U' is treated as 'the traveller came across a hill' and 'D' denotes that he came across a valley.

 Input is guranteed as a string with 'U', and 'D' with an integer having the value of length of input string.

 Output should be a single integer that denotes the number of valleys traveller walked through during his hike.

 Example :
 Input = 8
        UDDDUDUU

 Output = 1
 '''

 import sys
 n = int(input())
 s = input()

 m = 0
 v = 0

 for i in s:
    if i == 'U':
        m += 1
        if m == 0:
            v += 1
    else:
        m -= 1
 print(v)

diff --git a/allalgorithms/string/pangrams.py b/allalgorithms/string/pangrams.py
 # Algorithm to check the string is pangram or not

 alpha = "abcdefghijklmnopqrstuvwxyz "

 def isPangram(s):
    for i in alpha:
        if i not in s:
            return "not pangram"
    return "pangram"
 s = input().lower()
 print(isPangram(s))
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,31 @@
		'''
		Counting valleys deals with strings. One has to count the number of valleys and Hills in the given string and return the position of traveller at end w.r.t the start point.
		'U' is treated as 'the traveller came across a hill' and 'D' denotes that he came across a valley.

		Input is guranteed as a string with 'U', and 'D' with an integer having the value of length of input string.

		Output should be a single integer that denotes the number of valleys traveller walked through during his hike.

		Example :
		Input = 8
		UDDDUDUU

		Output = 1
		'''

		import sys
		n = int(input())
		s = input()

		m = 0
		v = 0

		for i in s:
		if i == 'U':
		m += 1
		if m == 0:
		v += 1
		else:
		m -= 1
		print(v)
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,12 @@
		# Algorithm to check the string is pangram or not

		alpha = "abcdefghijklmnopqrstuvwxyz "

		def isPangram(s):
		for i in alpha:
		if i not in s:
		return "not pangram"
		return "pangram"
		s = input().lower()
		print(isPangram(s))