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- def sum(f: Int => Int, a: Int, b: Int): Int =
- if (a > b)
- 0
- else
- f(a) + sum(f, a + 1, b)
- def id(x: Int): Int = x
- def sumInts(a: Int, b: Int): Int = sum(id, a, b)
- def kvadrId(x: Int): Int = x * x
- def kvadr(a: Int, b: Int): Int = sum(kvadrId, a, b)
- println(kvadr(0, 10))
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