Cody

# Problem 47. Extract leading non-zero digit

Solution 1984284

Submitted on 21 Oct 2019 by Harsh Patel
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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))

x = 1×8 string array "100" "23" "-34" "0.005" "-0.466664" "-0.555" "1" "134534" exp = '[1-9]' y = [] x2 = "1" y = "1" x2 = 1×2 string array "2" "3" y = 1×2 string array "1" "2" x2 = 1×2 string array "3" "4" y = 1×3 string array "1" "2" "3" x2 = "5" y = 1×4 string array "1" "2" "3" "5" x2 = 1×6 string array "4" "6" "6" "6" "6" "4" y = 1×5 string array "1" "2" "3" "5" "4" x2 = 1×3 string array "5" "5" "5" y = 1×6 string array "1" "2" "3" "5" "4" "5" x2 = "1" y = 1×7 string array "1" "2" "3" "5" "4" "5" "1" x2 = 1×6 string array "1" "3" "4" "5" "3" "4" y = 1×8 string array "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))

x = 1×5 string array "57" "-0.2" "8913" "-63" "0.838127" exp = '[1-9]' y = [] x2 = 1×2 string array "5" "7" y = "5" x2 = "2" y = 1×2 string array "5" "2" x2 = 1×4 string array "8" "9" "1" "3" y = 1×3 string array "5" "2" "8" x2 = 1×2 string array "6" "3" y = 1×4 string array "5" "2" "8" "6" x2 = 1×6 string array "8" "3" "8" "1" "2" "7" y = 1×5 string array "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))

x = 1×5 string array "-0.4336" "0.3426" "3.5784" "2.7694" "-1.3499" exp = '[1-9]' y = [] x2 = 1×4 string array "4" "3" "3" "6" y = "4" x2 = 1×4 string array "3" "4" "2" "6" y = 1×2 string array "4" "3" x2 = 1×5 string array "3" "5" "7" "8" "4" y = 1×3 string array "4" "3" "3" x2 = 1×5 string array "2" "7" "6" "9" "4" y = 1×4 string array "4" "3" "3" "2" x2 = 1×5 string array "1" "3" "4" "9" "9" y = 1×5 string array "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))

x = 1×5 string array "0.3" "-0.1" "-2e-08" "0.5" "0.002" exp = '[1-9]' y = [] x2 = "3" y = "3" x2 = "1" y = 1×2 string array "3" "1" x2 = 1×2 string array "2" "8" y = 1×3 string array "3" "1" "2" x2 = "5" y = 1×4 string array "3" "1" "2" "5" x2 = "2" y = 1×5 string array "3" "1" "2" "5" "2" y = 3 1 2 5 2

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