Cody

Problem 47. Extract leading non-zero digit

Solution 1857078

Submitted on 25 Jun 2019 by Chen Qian
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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))

out = 0 0 0 0 0 0 0 0 s = '100' s = '1' s = '1' s = '1' y = 1 s = '23' s = '23' s = '23' s = '23' y = 1 2 s = '-34' s = '-34' s = '-34' s = '34' y = 1 2 3 s = '0.005' s = '.5' s = '5' s = '5' y = 1 2 3 5 s = '-0.46666' s = '-.46666' s = '-46666' s = '46666' y = 1 2 3 5 4 s = '-0.555' s = '-.555' s = '-555' s = '555' y = 1 2 3 5 4 5 s = '1' s = '1' s = '1' s = '1' y = 1 2 3 5 4 5 1 s = '134534' s = '134534' s = '134534' s = '134534' 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))

out = 0 0 0 0 0 s = '57' s = '57' s = '57' s = '57' y = 5 s = '-0.2' s = '-.2' s = '-2' s = '2' y = 5 2 s = '8913' s = '8913' s = '8913' s = '8913' y = 5 2 8 s = '-63' s = '-63' s = '-63' s = '63' y = 5 2 8 6 s = '0.83813' s = '.83813' s = '83813' s = '83813' 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))

out = 0 0 0 0 0 s = '-0.4336' s = '-.4336' s = '-4336' s = '4336' y = 4 s = '0.3426' s = '.3426' s = '3426' s = '3426' y = 4 3 s = '3.5784' s = '3.5784' s = '35784' s = '35784' y = 4 3 3 s = '2.7694' s = '2.7694' s = '27694' s = '27694' y = 4 3 3 2 s = '-1.3499' s = '-1.3499' s = '-13499' s = '13499' 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))

out = 0 0 0 0 0 s = '0.3' s = '.3' s = '3' s = '3' y = 3 s = '-0.1' s = '-.1' s = '-1' s = '1' y = 3 1 s = '-2e-08' s = '-2e-8' s = '-2e-8' s = '2e8' y = 3 1 2 s = '0.5' s = '.5' s = '5' s = '5' y = 3 1 2 5 s = '0.002' s = '.2' s = '2' s = '2' y = 3 1 2 5 2

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