Cody

Problem 47. Extract leading non-zero digit

Solution 1327411

Submitted on 4 Nov 2017 by Ben Jackson
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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))

b = "100" c = 100 c = 1 y = 1 b = "23" c = 23 c = 2 3 y = 1 2 b = "-34" c = -34 c = 3 4 y = 1 2 3 b = 1×2 string array "0" "005" c = 0 5 c = 5 y = 1 2 3 5 b = 1×2 string array "-0" "466664" c = 0 466664 c = 4 6 6 6 6 4 y = 1 2 3 5 4 b = 1×2 string array "-0" "555" c = 0 555 c = 5 5 5 y = 1 2 3 5 4 5 b = "1" c = 1 c = 1 y = 1 2 3 5 4 5 1 b = "134534" c = 134534 c = 1 3 4 5 3 4 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))

b = "57" c = 57 c = 5 7 y = 5 b = 1×2 string array "-0" "2" c = 0 2 c = 2 y = 5 2 b = "8913" c = 8913 c = 8 9 1 3 y = 5 2 8 b = "-63" c = -63 c = 6 3 y = 5 2 8 6 b = 1×2 string array "0" "838127" c = 0 838127 c = 8 3 8 1 2 7 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))

b = 1×2 string array "-0" "4336" c = 0 4336 c = 4 3 3 6 y = 4 b = 1×2 string array "0" "3426" c = 0 3426 c = 3 4 2 6 y = 4 3 b = 1×2 string array "3" "5784" c = 3 5784 c = 3 y = 4 3 3 b = 1×2 string array "2" "7694" c = 2 7694 c = 2 y = 4 3 3 2 b = 1×2 string array "-1" "3499" c = -1 3499 c = 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))

b = 1×2 string array "0" "3" c = 0 3 c = 3 y = 3 b = 1×2 string array "-0" "1" c = 0 1 c = 1 y = 3 1 b = "-2e-08" c = -2.0000e-08 c = 2 8 y = 3 1 2 b = 1×2 string array "0" "5" c = 0 5 c = 5 y = 3 1 2 5 b = 1×2 string array "0" "002" c = 0 2 c = 2 y = 3 1 2 5 2