Cody

# Problem 47. Extract leading non-zero digit

Solution 1779551

Submitted on 9 Apr 2019 by Yingao Zhang
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))

y = 0 0 0 0 0 0 0 0 num = 1×8 string array "100" "23" "-34" "0.005" "-0.466664" "-0.555" "1" "134534" y = 1 0 0 0 0 0 0 0 y = 1 2 0 0 0 0 0 0 y = 1 2 3 0 0 0 0 0 y = 1 2 3 0 0 0 0 0 y = 1 2 3 0 0 0 0 0 y = 1 2 3 0 0 0 0 0 y = 1 2 3 5 0 0 0 0 y = 1 2 3 5 0 0 0 0 y = 1 2 3 5 4 0 0 0 y = 1 2 3 5 4 0 0 0 y = 1 2 3 5 4 5 0 0 y = 1 2 3 5 4 5 1 0 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))

y = 0 0 0 0 0 num = 1×5 string array "57" "-0.2" "8913" "-63" "0.838127" y = 5 0 0 0 0 y = 5 0 0 0 0 y = 5 2 0 0 0 y = 5 2 8 0 0 y = 5 2 8 6 0 y = 5 2 8 6 0 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))

y = 0 0 0 0 0 num = 1×5 string array "-0.4336" "0.3426" "3.5784" "2.7694" "-1.3499" y = 0 0 0 0 0 y = 4 0 0 0 0 y = 4 0 0 0 0 y = 4 3 0 0 0 y = 4 3 3 0 0 y = 4 3 3 2 0 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))

y = 0 0 0 0 0 num = 1×5 string array "0.3" "-0.1" "-2e-08" "0.5" "0.002" y = 0 0 0 0 0 y = 3 0 0 0 0 y = 3 0 0 0 0 y = 3 1 0 0 0 y = 3 1 2 0 0 y = 3 1 2 0 0 y = 3 1 2 5 0 y = 3 1 2 5 0 y = 3 1 2 5 0 y = 3 1 2 5 0 y = 3 1 2 5 2