连续遍历给定数量的数据集

Question

I have a certain dataset, which looks like this:

3 # Number of test cases 3 # Test case 1 has 3 names ALFRED SINGH JOHN 6 # Test case 2 has 6 names ALPHA NITRO ROB RICHARD ANON POPE 1 # Test case 3 has 1 name FELIX

So i have stringified this dataset, and my problem is looping through the entire dataset based on number of testcases, and I also have to consider number of names in each test case. i am using javascript for this and this is my current code. it can only do the first test case:

 var example = '3\\n3\\nALFRED\\nSINGH\\nJOHN\\n6\\nALPHA\\nNITRO\\nROB\\nRICHARD\\nANON\\nPOPE\\n1\\nFELIX' run(example) function run(input) { var lines = input.split('\\n') var testCases = lines[0] lines.shift() var n = lines[0] lines.shift() for (var i =0; i < n; i += 1) { var names = lines[i] console.log(names) } } 

My problem is looping through the entire dataset while respecting number of test cases and names.

Answers Multiple correct answers. Going with JaromandaX for identifying the problem 1st.

ADDITIONAL PROBLEM

So the answers seem to return a list of all names without considering the test cases. The aim is to group the names in respect to their test cases. so a structure like this (theoretically):

{
    "1": ["ALFRED", "SINGH", "JOHN"],
    "2": [...],
    "3": ["FELIX"]
}

Answer 1

JSFiffler for quick reference : https://jsfiddle.net/rj1405/vttejren/1/

You need to loop through the test cases and have to remove the elements using shift() .

 var example = `3 3 ALFRED SINGH JOHN 6 ALPHA NITRO ROB RICHARD ANON POPE 1 FELIX`; run(example) function run(input) { var lines = input.split('\\n') var testCases = lines.shift(); for(var x = 0; x < testCases; x++){ var numberOfNames = lines.shift(); for (var i = 0; i < numberOfNames; i++) { var names = lines.shift(); console.log(names); } } } 

Answer 2

Use an outer loop for the test cases - inner loop needs a slight change too

 var example = '3\\n3\\nALFRED\\nSINGH\\nJOHN\\n6\\nALPHA\\nNITRO\\nROB\\nRICHARD\\nANON\\nPOPE\\n1\\nFELIX'; function run(input) { var lines = input.split('\\n') var testCases = lines.shift(); var obj = {}; for (var x = 0; x < testCases; x++) { var testCase = obj[x+1] = []; var numberOfNames = lines.shift(); for (var i = 0; i < numberOfNames; i += 1) { testCase.push(lines.shift()); } } return obj; } console.log(run(example)); 

note, using lines.shift() to "read" the values from lines, because shift returns the line that was shifted

Answer 3

You need to loop through all of test cases. This is the code:

 var example = // 'the dataset above (stringified)' run(example) function run(input) { var lines = input.split('\\n') var testCases = lines[0] lines.shift() for(var x = 0; x < testCases; x++){ var numberOfNames = lines[0] lines.shift() for (var i =0; i < numberOfNames; i += 1) { var names = lines.shift() console.log(names) } } } 

EDIT: You have to remove those names from array :)