Cody

# Problem 47. Extract leading non-zero digit

Solution 1904848

Submitted on 19 Aug 2019 by Tetsuji Tsuda
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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))

l = 8 ans = [] x_s = '100' l_s = 3 ans = 1 x_s = '23' l_s = 2 ans = 1 2 x_s = '-34' l_s = 3 ans = 1 2 3 x_s = '0.005' l_s = 5 ans = 1 2 3 5 x_s = '-0.46666' l_s = 8 ans = 1 2 3 5 4 x_s = '-0.555' l_s = 6 ans = 1 2 3 5 4 5 x_s = '1' l_s = 1 ans = 1 2 3 5 4 5 1 x_s = '134534' l_s = 6 ans = 1 2 3 5 4 5 1 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))

l = 5 ans = [] x_s = '57' l_s = 2 ans = 5 x_s = '-0.2' l_s = 4 ans = 5 2 x_s = '8913' l_s = 4 ans = 5 2 8 x_s = '-63' l_s = 3 ans = 5 2 8 6 x_s = '0.83813' l_s = 7 ans = 5 2 8 6 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))

l = 5 ans = [] x_s = '-0.4336' l_s = 7 ans = 4 x_s = '0.3426' l_s = 6 ans = 4 3 x_s = '3.5784' l_s = 6 ans = 4 3 3 x_s = '2.7694' l_s = 6 ans = 4 3 3 2 x_s = '-1.3499' l_s = 7 ans = 4 3 3 2 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))

l = 5 ans = [] x_s = '0.3' l_s = 3 ans = 3 x_s = '-0.1' l_s = 4 ans = 3 1 x_s = '-2e-08' l_s = 6 ans = 3 1 2 x_s = '0.5' l_s = 3 ans = 3 1 2 5 x_s = '0.002' l_s = 5 ans = 3 1 2 5 2 y = 3 1 2 5 2