Inserting NaN for unknown data

2020 6 11
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更新时间：2020 6 11
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I have one array say from (1:10)'
I have a one more matrix [2, 100; 3, 450; 5, 500; 7, 800; 8, 850];
I want my final answer to be [1, NaN; 2, 100; 3, 450; 4, NaN; 5, 500; 6, NaN; 7, 800; 8, 850; 9, NaN; 10, NaN]

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KSSV
KSSV 2020-6-11

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clc; clear all ;
C = [1, NaN; 2, 100; 3, 450; 4, NaN; 5, 500; 6, NaN; 7, 800; 8, 850; 9, NaN; 10, NaN] ;
A = (1:10)' ;
B = [2, 100; 3, 450; 5, 500; 7, 800; 8, 850];
iwant = NaN(10,2) ;
iwant(:,1) = A ;
[c,ia] = ismember(A,B(:,1)) ;
iwant(c,2) = B(:,2) ;

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