The general functions like Program 108 are the kind where the index array notation is really useful. Write reverse, copy, and clip using index array notation.

Question

What will be an ideal response?

Answer 1

```
def reverse2(source):
target = makeEmptySound(getLength(source))
targetSamples = getSamples(target)
sourceSamples = getSamples(source)
for sourceIndex in range(0,getLength(source)):
sourceValue = getSampleValue(sourceSamples[sourceIndex])
setSampleValue(targetSamples[getLength(source)-1-sourceIndex] ,sourceValue)

return target
def copy2(source,target,start):
targetIndex = start
sourceSamples = getSample(source)
targetSamples = getSample(target)
for sourceIndex in range(0,getLength(source)):
sourceValue = getSampleValue(sourceSamples[sourceIndex]) setSampleValue(targetSamples[targetIndex] ,sourceValue) ' targetIndex = targetIndex + 1
def clip2(source,start,end):
target = makeEmptySound(end - start)
sourceSamples = getSamples(source)
targetSamples = getSamples(target)
for targetIndex in range(0 ,getLength(target)):
sourceValue = getSampleValue(sourceSamples[start+targetIndex]) setSampleValue(targetSamples[targetIndex] ,sourceValue) return target
```