STMT Assignment 4. 计算Halstead 复杂度的11项内容

操作符 OperatorNumber of Occurrencesif1<1+=1-1+6*2/4%1return1dayray1int1n1=11N1=20 操作数 OperandNumber of Occurrencesmonth331121year5day11271261101416110014001n2=13N2=19 计算 词汇表长度（Program vocabulary ）：n = n1+n2 = 24程序长度或简单长度（Program length ）：N = N1+N2 = 39程序的预测长度（Calculated program length）：N^ = 11log2（11）+13log2（13）=86.1594641399程序体积或容量（Volume ）：V=Nlog2（n）= 39log2（24）= 178.8135375273程序级别（Level ）：L^ = （2/n1）（n2/N2）= （2/11）（13/19）=0.1244019138755980861244019138756程序难度（Difficulty ）：D = 1/L^ = 8.0384615384615384615384615384614编程工作量（Effort ）：E = V*D = 1437.38574396945语言级别：L’ = LLV = 2.7672890128077379180879558618164编程时间（hours ）：T^ = E/(S*F) = 0.02218187876496064814814814814815平均语句大小：N / 语句数 = 39/4 = 9.75程序中的错误数预测值：B = V / 3000 = 0.0596045125091