Cody

# Problem 47. Extract leading non-zero digit

Solution 91258

Submitted on 23 May 2012 by Sam
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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))

ans = 1 y = 1 ans = 2 y = 1 2 ans = [] ans = 3 y = 1 2 3 ans = 0 ans = [] ans = 0 ans = 0 ans = 5 y = 1 2 3 5 ans = [] ans = 0 ans = [] ans = 4 y = 1 2 3 5 4 ans = [] ans = 0 ans = [] ans = 5 y = 1 2 3 5 4 5 ans = 1 y = 1 2 3 5 4 5 1 ans = 1 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))

ans = 5 y = 5 ans = [] ans = 0 ans = [] ans = 2 y = 5 2 ans = 8 y = 5 2 8 ans = [] ans = 6 y = 5 2 8 6 ans = 0 ans = [] ans = 8 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))

ans = [] ans = 0 ans = [] ans = 4 y = 4 ans = 0 ans = [] ans = 3 y = 4 3 ans = 3 y = 4 3 3 ans = 2 y = 4 3 3 2 ans = [] ans = 1 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))

ans = 0 ans = [] ans = 3 y = 3 ans = [] ans = 0 ans = [] ans = 1 y = 3 1 ans = [] ans = 2 y = 3 1 2 ans = 0 ans = [] ans = 5 y = 3 1 2 5 ans = 0 ans = [] ans = 0 ans = 0 ans = 2 y = 3 1 2 5 2