need help to write a code please

kindly, want write code read  analog signal 10 times , put these reading in matrix as

code: [select]

for (int i=0;i<10;i++) {
   a[i]=readread(a0);
}

then compare elements of matrix if belong matrix contain 50 elements as
int b[50] = { 512,519,520,600,...........................,400};

i not want make loop compare 50 times cause take long time...i want code check minimum time

tell want do, not how think should it.

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