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Activity for xnor‭

Type On... Excerpt Status Date
Edit Post #279625 Initial revision almost 4 years ago
Answer A: Longest Increasing Subsequence
[Haskell], 37 bytes f(h:t)=max(1+f[x|xh])$f t f =0 Try it online!
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almost 4 years ago
Edit Post #279456 Post edited:
almost 4 years ago
Edit Post #279457 Initial revision almost 4 years ago
Answer A: Shape of an array
[Python 2], 37 bytes l=input() while 1:print len(l);l=l[0] Try it online! This makes heavy use of programs being allowed to terminate with error, which I assume is allowed by default because it is on SE. We repeatedly print the length, and then replace the list with its firs...
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almost 4 years ago
Edit Post #279456 Post edited:
almost 4 years ago
Edit Post #279456 Post edited:
almost 4 years ago
Edit Post #279456 Post edited:
almost 4 years ago
Edit Post #279456 Post edited:
almost 4 years ago
Edit Post #279456 Post edited:
almost 4 years ago
Edit Post #279456 Initial revision almost 4 years ago
Answer A: Weave Strings Together
[Haskell], 40 bytes ```haskell f((h:t):r)=h:f(r++[t]) f(:r)=f r f =[] ``` Try it online!
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almost 4 years ago
Edit Post #279370 Post edited:
almost 4 years ago
Edit Post #279370 Initial revision almost 4 years ago
Answer A: Partial Sums of Harmonic Series
[Python 3], 35 bytes f=lambda x,i=1:x>0and-f(x-1/i,i+1) Try it online! Subtracts each `1/i` in turn from the initial value until the result is no longer positive.
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almost 4 years ago
Edit Post #279182 Post edited:
almost 4 years ago
Edit Post #279182 Post edited:
almost 4 years ago
Edit Post #279182 Post edited:
almost 4 years ago
Edit Post #279182 Post edited:
almost 4 years ago
Edit Post #279182 Post edited:
almost 4 years ago
Edit Post #279182 Initial revision almost 4 years ago
Answer A: Print the Great Numeric Pyramid
[Python 2], 76 bytes i=27 whilei:print' 'i+' '.join(`min(i,j,27-i-j)`for j in range(28-i));i-=1 Try it online! Computes the digit in row `i` from the bottom, position `j` as `min(i,j,27-i-j)`. For comparison, a bad effect to compute the row numbers arithmetically, made ha...
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almost 4 years ago
Edit Post #279159 Post edited almost 4 years ago
Edit Post #279160 Post edited:
almost 4 years ago
Edit Post #279160 Post edited:
almost 4 years ago
Edit Post #279160 Initial revision almost 4 years ago
Answer A: Evaluate a single variable polynomial equation
[Haskell], 20 bytes f x=foldl((+).(x))0 Try it online! Takes input coefficients from highest degree to lowest. 21 bytes x%(h:t)=h+xx%t x%=0 Try it online!
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almost 4 years ago
Suggested Edit Post #279159 Suggested edit:

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helpful almost 4 years ago
Edit Post #279156 Initial revision almost 4 years ago
Answer A: "Hello, World!"
[Python 2], 20 bytes print"Hello, World!" Try it online!
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almost 4 years ago