Selection Algorithm In Ruby

# Library for selection algorithm

#

# @author  : irfanudin ridho

# @email   : irfan.ub@gmail.com

# @date    : December 26, 2010

# @version : 1.0

# method to get the an index of the min value of the data

# @param data an array of the data

# @return minIndex int index of the min value

def getMinIndex(data)
    minIndex = 0
    len = data.length
    (1..len-1).each do |i|
        if(data[i]<data[minIndex])
            minIndex = i
        end
    end
    return minIndex
end

# method to get the an index of the max value of the data

# @param data an array of the data

# @return maxIndex int index of the max value

def getMaxIndex data
    maxIndex = 0
    len = data.length
    (1..len-1).each do |i|
        if(data[i]>data[maxIndex])
            maxIndex = i
        end
    end
    return maxIndex
end

# method to get min value of the data

# @param data an array of the data

# @return minValue min value of the data
def getMinValue data
    minValue = data[0]
    len = data.length
    (1..len-1).each do |i|
        if(data[i]<minValue)
            minValue = data[i]
        end
    end
    return minValue
end

# method to get max value of the data

# @param data an array of the data

# @return maxValue max value of the data

def getMaxValue data
    maxValue = data[0]
    len = data.length
    (1..len-1).each do |i|
        if(data[i]>maxValue)
            maxValue = data[i]
        end
    end
    return maxValue
end