MATLAB：特定の条件を満たす番号を見つけて "0"とマークする方法は？例えば

Question

、 "0" sum(A(1:i)) ~= 1 && sum(A(1:i)) ~= 0として番号をマークする方法

A = [1 0 1 1 0 -1 0 1 -1] 

for i = 1: length(A) 

？

コードの書き方は？

Answer 1

A = [1 0 1 1 0 -1 0 1 -1] 

%# create all sums from 1 through i 
sa = cumsum(A); 

%# in output: ith element is true if sum from 
%# 1 through the ith element in A is 0 or 1 
output = ismember(sa,[0 1]) 

output = 
    1  1  0  0  0  0  0  0  0