// ============================================================================
// 076 — Text Histogram
// ============================================================================
// Build a simple text-based histogram from data.
//
// Run:   soma run 076_histogram.cell run
// Expect:
//   Score Distribution:
//   0-59:   **
//   60-79:  ****
//   80-89:  ***
//   90-100: *****

cell Histogram {

    on run() {
        let scores = list(45, 72, 88, 95, 67, 93, 82, 55, 91, 78, 85, 96, 63, 90)

        // Count values in each bucket
        let low = 0
        let mid = 0
        let high = 0
        let top = 0

        for s in scores {
            if s < 60 {
                low = low + 1
            } else {
                if s < 80 {
                    mid = mid + 1
                } else {
                    if s < 90 {
                        high = high + 1
                    } else {
                        top = top + 1
                    }
                }
            }
        }

        print("Score Distribution:")
        let b1 = make_bar(low)
        let b2 = make_bar(mid)
        let b3 = make_bar(high)
        let b4 = make_bar(top)
        print("0-59:   {b1}")
        print("60-79:  {b2}")
        print("80-89:  {b3}")
        print("90-100: {b4}")

        return "done"
    }

    // Build a bar of asterisks
    on make_bar(count: Int) {
        let bar = ""
        let i = 0
        while i < count {
            bar += "*"
            i = i + 1
        }
        return bar
    }
}