Cody

# Problem 47. Extract leading non-zero digit

Solution 499606

Submitted on 11 Sep 2014 by Aslak Grinsted
This solution is locked. To view this solution, you need to provide a solution of the same size or smaller.

### 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))

x = 1.0e+12 2.3e+11 3.4e+11 5.0e+07 4.7e+09 5.6e+09 1.0e+10 1.3e+15 ans = 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))

x = 5.7e+11 2.0e+09 8.9e+13 6.3e+11 8.4e+09 ans = 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))

x = 4.3e+09 3.4e+09 3.6e+10 2.8e+10 1.3e+10 ans = 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))

x = 3.0e+09 1.0e+09 2.0e+02 5.0e+09 2.0e+07 ans = 3 1 2 5 2