def my_strim(a):
s=0
s1=-1
for i in a:
if i==' ':
s=s+1
else:
break
for i1 in a[::-1]:
if i1==' ':
s1-=1
if s1==-1:
return a[s:]
return a[s:s1+1]
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def my_strim(a):
s=0
s1=-1
for i in a:
if i==' ':
s=s+1
else:
break
for i1 in a[::-1]:
if i1==' ':
s1-=1
else:
break
if s1==-1:
return a[s:]
else:
return a[s:s1+1]