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| {{Question de type Formules}}
| | #REDIRECT [[Types_de_questions_tiers]] |
| {{Traduction}}
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| ==Fonctions non numériques==
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| {| class="nicetable"
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| |-
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| ! Fonction
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| ! Exemples
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| ! Resultat
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| ! Description
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| |-
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| | rowspan="2" | concat(X1,X2, ...)
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| | concat([1],[2,3],[4])
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| | [1,2,3,4]
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| | rowspan="2" | Returns a list by concatenating X1, X2, ...
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| |-
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| | concat(["A"],["B"])
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| | ["A","B"]
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| |-
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| | rowspan="3" | diff(X,Y)<br>diff(X,Y,N)
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| | diff([1,1,1],[1,4,9])
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| | [0,3,8]
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| | rowspan="3" | Return a list of number D of difference between the list X and Y element wise.<br>If X and Y are a list of number, then D[i] will be abs(X[i]-Y[i]).<br>If X and Y are a list of string, then D[i] will be the difference between the algebraic formula X[i] and Y[i].
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| |-
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| | diff(["x*x"],["x^2"])
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| | [0]
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| |-
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| | diff(["x"],["x^2"],20)
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| | A list with number >= 0
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| |-
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| | fill(N,value)
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| | fill(3,0)
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| | [0,0,0]
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| | Returns a list with size N and all elements filled by value.
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| |-
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| | inv(X)
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| | inv([0,3,1,2])
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| | [0,2,3,1]
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| | Return the inverse permutation of X, which is the same as R in for(i:[0:N]) R[X[i]]=i with size N of X.<br> It has the property that X==inv(inv(X)) and A==sublist(sublist(A,X),inv(X)).
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| |-
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| | rowspan="2" | join(s,A,B...)
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| | join(" ",["Hello","world"])
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| | "Hello world"
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| | rowspan="2" | Returns a string that joins all elements together and separated by string s . The A, B, ... can be any number or string or list.
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| |-
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| | join("",1,"+",2,["="])
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| | "1+2="
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| |-
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| | len(X)
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| | len([0:10])
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| | 10
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| | Returns the length of the list X
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| |-
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| | rowspan="3" | map(uop,X)<br>map(bop,X,Y)
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| | map("abs",[-1,2,-3])
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| | [1,2,3]
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| | rowspan="3" | Returns a list by applying the operator/function element wise to all elements in X.<br>
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| The uop or bop are the string of unary or binary operators (or functions) for numbers respectively.<br>
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| map(uop,X) has the meaning as R in for(i:[0:N]) R[i]=op(X[i]);<br>
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| map(bop,X,Y) has the meaning as R in for(i:[0:N]) R[i]=op(X[i],Y[i]); for function or for(i:[0:N]) R[i]=X[i] bop Y[i] for operator.<br>
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| Either X or Y can be a number and it will automatically convert to the same size of the other list.
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| |-
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| | map("+",[1,2,3],5)
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| | [6,7,8]
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| |-
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| | map("<",[3,4],[1,7])
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| | [0,1]
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| |-
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| | rowspan="3" | pick(i,X)<br>pick(i,x0,x1,...)
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| | pick(1<2,["A","B"])
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| | "B"
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| | rowspan="3" | A safe variant of list subscript. It picks the i-th element from the list X or the first element if index out of range.<br>pick(i,x0,x1,...) picks the i-th element in the [x0,x1,...] , or x0 if index out of range.
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| |-
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| | pick(10,"","A","B")
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| | ""
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| |-
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| | pick(1,[1,2],[3,4])
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| | [3,4]
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| |-
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| | rowspan="2" | sort(X)<br>sort(X,Y)
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| | sort(["B","C","A"])
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| | ["A","B","C"]
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| | rowspan="2" | Returns the sorted list of X in ascending order.<br>
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| sort(X,Y) sortd the list X,Y together by sorting Y in ascending order and returns the sorted list X.
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| |-
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| | sort(["B","C","A"],[0,2,1])
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| | ["B","A","C"]
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| |-
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| | str(x)
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| | str(1.1)
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| | "1.1"
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| | Converts the number x into a string
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| |-
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| | rowspan="2" | sublist(X,Y)
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| | sublist([7,8,9],[1,1,2])
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| | [8,8,9]
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| | rowspan="2" | Returns a sublist R of X using list Y as index, where R[i] = X[Y[i]].<br>If Y is a permutation, say Y=shuffle([0:5]), then X is permuted depending on Y sum(X).
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| |-
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| | sublist([7,8,9],[2,1,0])
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| | [9,8,7]
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| |-
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| | sum(X)
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| | sum([1,2,3])
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| | 6
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| | Returns the sum of all elements in the list of numbers X
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| |-
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| |}
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| [[#top|Accéder au haut de la page]]
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| [[Question de type Formules|← QUESTION DE TYPE FORMULES]] | |
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| ===Autres langues===
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| [https://docs.moodle.org/33/en/Formulas:_Non-numerical_functions English]<br>
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| [https://docs.moodle.org/all/es/Tipo_de_pregunta_f%C3%B3rmulas Español]
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