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Practice

Student Age Category Counter

2022/Feb/Mar·Variant 2
MEDIUMSelection

Write an algorithm to categorise the ages of a number of students. First, input N (the number of students). Then, input N integer ages. Count and output the number of students in four categories: under 7, 7 to 11, 12 to 17, and 18 and over.

Input: Integer N, followed by N integer ages. Output: Four lines in the exact format shown.

Example:

Input:  5
        6
        7
        12
        18
        20
Output: Under 7: 1
        7 to 11: 1
        12 to 17: 1
        18 and over: 2
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Sample Test Cases

Test 1: One in each lower, two in highest
Inputs: 5, 6, 7, 12, 18, 20
Expected: Under 7: 1 7 to 11: 1 12 to 17: 1 18 and over: 2
Test 2: All under 7
Inputs: 3, 5, 5, 5
Expected: Under 7: 3 7 to 11: 0 12 to 17: 0 18 and over: 0