contributed by <handsomehsia J > CH18 Service-oriented software engineering 18.1 SOA (Service-Oriented Architecture) SOA is a style of software design where services are provided to the other components by application components, through a communication protocol over a network. There is 5 main HTTP methods: GET：The GET method requests a representation of the specified resource. Requests using GET should only retrieve data.

contributed by < handsomehsia > make an isoceles triangle :::info Step 1 - Take number of rows to be printed, n. Step 2 - Make an iteration for n times Step 3 - Print " " (space) for in decreasing order from 1 to n-1 Step 4 - Print "* " (start, space) in increasing order Step 5 - Return :::