Please explain this Python code def trigrams(ls,t): # counts user supplied trigram trioccurs = 0 # loop through longstring counting occurences of target for lc in range(0,len(ls)-2): if ls[lc:lc+3] == t: trioccurs += 1 return trioccurs def trigrams(ls): # uses a dictionary; finds all trigrams dict = {} # loop through longstring counting occurences of target for lc in range(0,len(ls)-2): t = ls[lc:lc+3] # if not there, insert into dictionary if t not in dict: dict[t] = 1 else: dict[t] = dict[t] + 1 return dict
Please explain this Python code def trigrams(ls,t): # counts user supplied trigram trioccurs = 0 # loop through longstring counting occurences of target for lc in range(0,len(ls)-2): if ls[lc:lc+3] == t: trioccurs += 1 return trioccurs def trigrams(ls): # uses a dictionary; finds all trigrams dict = {} # loop through longstring counting occurences of target for lc in range(0,len(ls)-2): t = ls[lc:lc+3] # if not there, insert into dictionary if t not in dict: dict[t] = 1 else: dict[t] = dict[t] + 1 return dict
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Please explain this Python code
def trigrams(ls,t): # counts user supplied trigram
trioccurs = 0
# loop through longstring counting occurences of target
for lc in range(0,len(ls)-2):
if ls[lc:lc+3] == t:
trioccurs += 1
return trioccurs
def trigrams(ls): # uses a dictionary; finds all trigrams
dict = {}
# loop through longstring counting occurences of target
for lc in range(0,len(ls)-2):
t = ls[lc:lc+3]
# if not there, insert into dictionary
if t not in dict:
dict[t] = 1
else:
dict[t] = dict[t] + 1
return dict
trioccurs = 0
# loop through longstring counting occurences of target
for lc in range(0,len(ls)-2):
if ls[lc:lc+3] == t:
trioccurs += 1
return trioccurs
def trigrams(ls): # uses a dictionary; finds all trigrams
dict = {}
# loop through longstring counting occurences of target
for lc in range(0,len(ls)-2):
t = ls[lc:lc+3]
# if not there, insert into dictionary
if t not in dict:
dict[t] = 1
else:
dict[t] = dict[t] + 1
return dict
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