Data commit

Task/Symmetric-difference/AWK/symmetric-difference.awk

@@ -0,0 +1,31 @@
+# syntax: GAWK -f SYMMETRIC_DIFFERENCE.AWK
+BEGIN {
+    load("John,Bob,Mary,Serena",A)
+    load("Jim,Mary,John,Bob",B)
+    show("A \\ B",A,B)
+    show("B \\ A",B,A)
+    printf("symmetric difference: ")
+    for (i in C) {
+      if (!(i in A && i in B)) {
+        printf("%s ",i)
+      }
+    }
+    printf("\n")
+    exit(0)
+}
+function load(str,arr,  i,n,temp) {
+    n = split(str,temp,",")
+    for (i=1; i<=n; i++) {
+      arr[temp[i]]
+      C[temp[i]]
+    }
+}
+function show(str,a,b,  i) {
+    printf("%s: ",str)
+    for (i in a) {
+      if (!(i in b)) {
+        printf("%s ",i)
+      }
+    }
+    printf("\n")
+}