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Added some algorithms related to strings, I hope this will help. #66

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Added some algorithms related to strings, I hope this will help. #66

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9992d5c
Adding counting valleys algorithm, that deals with strings
JahnaviChitta Nov 4, 2019
f5f9ea8
Adding pangrams problem for strings
JahnaviChitta Nov 4, 2019
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31 changes: 31 additions & 0 deletions allalgorithms/string/counting_valleys.py
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Original file line number Diff line number Diff line change
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'''
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)

12 changes: 12 additions & 0 deletions allalgorithms/string/pangrams.py
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# 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))