Cody

# Problem 47. Extract leading non-zero digit

Solution 1231336

Submitted on 14 Jul 2017 by Salvatore Lacava
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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))

nstr = '100 23 -34 0.005 -0.466664 -0.555 1 134534' nstr = '1 23 -34 .5 -.466664 -.555 1 134534' nstr = '1 23 -34 5 -466664 -555 1 134534' nstr = '1 23 34 5 466664 555 1 134534' v = 1×8 cell array '1' '23' '34' '5' '466664' '555' '1' '134534' y = 1 y = 1 2 y = 1 2 3 y = 1 2 3 5 y = 1 2 3 5 4 y = 1 2 3 5 4 5 y = 1 2 3 5 4 5 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))

nstr = '57 -0.2 8913 -63 0.838127' nstr = '57 -.2 8913 -63 .838127' nstr = '57 -2 8913 -63 838127' nstr = '57 2 8913 63 838127' v = 1×5 cell array '57' '2' '8913' '63' '838127' y = 5 y = 5 2 y = 5 2 8 y = 5 2 8 6 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))

nstr = '-0.4336 0.3426 3.5784 2.7694 -1.3499' nstr = '-.4336 .3426 3.5784 2.7694 -1.3499' nstr = '-4336 3426 35784 27694 -13499' nstr = '4336 3426 35784 27694 13499' v = 1×5 cell array '4336' '3426' '35784' '27694' '13499' y = 4 y = 4 3 y = 4 3 3 y = 4 3 3 2 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))

nstr = '0.3 -0.1 -2e-08 0.5 0.002' nstr = '.3 -.1 -2e-8 .5 .2' nstr = '3 -1 -2e-8 5 2' nstr = '3 1 2e8 5 2' v = 1×5 cell array '3' '1' '2e8' '5' '2' y = 3 y = 3 1 y = 3 1 2 y = 3 1 2 5 y = 3 1 2 5 2

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