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Given a non-negative int n, return the count of the occurrences of 7 as a digit, so for example 717 yields 2. (no loops). Note that mod (%) by 10 yields the rightmost digit (126 % 10 is 6), while divide (/) by 10 removes the rightmost digit (126 / 10 is 12). count7(717) → 2 count7(7) → 1 count7(123) → 0 ...Save, Compile, Run (ctrl-enter) |
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Difficulty: 321.0
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