META - Comment Your Doubts Here:

[yozaam]

Format for doubt:

If it is something related to concepts I request you to read the prerequisites first, then:

Mention the file/day eg. day1_char_count.py

Mention the line of code you didn't understand

OR just put the link like this:

placementTraining/day1_char_count.py

Line 3 in a1f1962

print('Question: Find the frequency/no. of occurances of each character in a string.')

Click here ⬇️

[yozaam]

Informal explanation on list slicing:

for(int i = start ; i < end ; i=i+1)
for i in range (start,end)
for( int i = start ; i >= end ; i=i-1)
for i in range (start,end,-1) please note start should be bigger than end in negative decreasing for loop

for(int i = start ; i < end ; i= i + 2)
for i in range (start,end,2)

basicallly we have
start, end , step
f step is negative this for loop is activated,

like for i in range(half1,0,-1)

for (int i = half1 ; i>=0 ; i = i-1)

start end step
not mentioning anything automatically goes to 0 or n
so
[half1 : 0 : -1 ]

is [half1 : : -1]

is for (int i = half1 ; i>=0 ; i = i-1)

ohh got it so -1 means in reverse direction na ?
got it?
yeah for loop
3 arguments
start ;stop ; step
like that in python
if step is negative (then it is backwards for loop, so bigger start to smaller stop)