Python-for-loop-programs/forsubstrinstr.py at for · tulasi251/Python-for-loop-programs · GitHub

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# print how many times substring is present in given string
s=input('enter a string:')  #s='bangalore'
ss=input('enter a substring:') #ng
count=0
for ip in range(len(s)):
    if ss==s[ip:ip+len(ss):1]:
        count+=1
print(count)

'''
Initial variables:
count = 0

Iteration through string s:
ip = 0:

s[0:2] → "ba"

"ng" == "ba"? No → count = 0

ip = 1:

s[1:3] → "an"

"ng" == "an"? No → count = 0

ip = 2:

s[2:4] → "ng"

"ng" == "ng"? Yes → count = 0 + 1 = 1

ip = 3:

s[3:5] → "ga"

"ng" == "ga"? No → count = 1

ip = 4:

s[4:6] → "al"

"ng" == "al"? No → count = 1

ip = 5:

s[5:7] → "lo"

"ng" == "lo"? No → count = 1

ip = 6:

s[6:8] → "or"

"ng" == "or"? No → count = 1

ip = 7:

s[7:9] → "re"

"ng" == "re"? No → count = 1

Final Output:
Print count → 1
'''