Cody

# Problem 47. Extract leading non-zero digit

Solution 16138

Submitted on 30 Jan 2012 by Bojan
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### Test Suite

Test Status Code Input and Output
1   Pass
%% x = [100 23 -34 0.005 -0.466664 -0.555 1 134534]; y_correct = [1 2 3 5 4 5 1 1]; assert(isequal(leadingDigit(x),y_correct))

a = 1.000000e+02 2.300000e+01 3.400000e+01 5.000000e-03 4.666640e-01 5.550000e-01 1.000000e+00 1.345340e+05 y = 1 2 3 5 4 5 1 1

2   Pass
%% x = [57 -0.2 8913 -63 0.838127]; y_correct = [5 2 8 6 8]; assert(isequal(leadingDigit(x),y_correct))

a = 5.700000e+01 2.000000e-01 8.913000e+03 6.300000e+01 8.381270e-01 y = 5 2 8 6 8

3   Pass
%% x = [-0.4336 0.3426 3.5784 2.7694 -1.3499]; y_correct = [4 3 3 2 1]; assert(isequal(leadingDigit(x),y_correct))

a = 4.336000e-01 3.426000e-01 3.578400e+00 2.769400e+00 1.349900e+00 y = 4 3 3 2 1

4   Pass
%% x = [0.3000 -0.1 -0.00000002 0.5 0.002]; y_correct = [3 1 2 5 2]; assert(isequal(leadingDigit(x),y_correct))

a = 3.000000e-01 1.000000e-01 2.000000e-08 5.000000e-01 2.000000e-03 y = 3 1 2 5 2