50 lines
794 B
Python
50 lines
794 B
Python
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s = "abc"
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t = "ahbgdc"
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def isSubsequence(s, t):
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sp = 0
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tp = 0
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while sp<len(s) and tp<len(t):
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if s[sp]==t[tp]:
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sp+=1
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tp+=1
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continue
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else:
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tp+=1
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# reached end of s
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return sp==len(s)
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# def isSubsequence(s, t):
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# sp = 0
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# tp = 0
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# while sp < len(s):
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# # increment tp until a match
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# while sp<len(s) and tp<len(t) and s[sp]!=t[tp]:
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# tp+=1
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# # reached end of t
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# if tp==len(t):
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# if t[tp-1]==s[sp]:
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# return True
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# else:
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# return False
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# # if there's a match, increment both
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# if s[sp]==t[tp]:
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# sp+=1
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# tp+=1
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print( isSubsequence(s,t) )
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