HOMEWORK bobocode-projects#7 – FUNCTIONAL PROGRAMMING

- LambdaFunctionsMap Exercise

Author: Andrii Bobrov

5-0-functional-programming/5-0-1-lambda-functions-map/src/main/java/com/bobocode/fp/Functions.java

@@ -15,6 +15,11 @@ public static FunctionMap<Integer, Integer> intFunctionMap() {
         FunctionMap<Integer, Integer> intFunctionMap = new FunctionMap<>();
 
         // todo: add simple functions to the function map (abs, sgn, increment, decrement, square)
+        intFunctionMap.addFunction("abs", Math::abs);
+        intFunctionMap.addFunction("sgn", i -> Integer.compare(i, 0));
+        intFunctionMap.addFunction("increment", i -> ++i);
+        intFunctionMap.addFunction("decrement", i -> --i);
+        intFunctionMap.addFunction("square", i -> i*i);
 
         return intFunctionMap;
     }