Cody

# Problem 47. Extract leading non-zero digit

Solution 161310

Submitted on 13 Nov 2012 by Eric
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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))

temp = 100 temp = 23 temp = -34 temp = 0.005 temp = -0.46666 temp = -0.555 temp = 1 temp = 134534

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

temp = 57 temp = -0.2 temp = 8913 temp = -63 temp = 0.83813

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))

temp = -0.4336 temp = 0.3426 temp = 3.5784 temp = 2.7694 temp = -1.3499

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))

temp = 0.3 temp = -0.1 temp = -2e-08 temp = 0.5 temp = 0.002